Why Your Dog Is Not Eating

Published by the McDuffy Nutrition Team • The Bowl by McDuffy

Few things are more stressful for a pet parent than watching your dog refuse to eat. You put the bowl down. They sniff it, maybe lick it once, and walk away. Or worse—they do not even approach the bowl at all. You try a different food. You try warming it up. You try hand-feeding. Nothing works. And suddenly you are on your phone at midnight, typing "why is my dog not eating" into Google with a knot in your stomach.

Take a deep breath. Kalma lang. You are not alone, and in most cases, a dog skipping a meal or two is not an emergency. But it is always worth understanding why it is happening, because the cause determines the solution. Sometimes the answer is simple—your dog is too warm, or stressed from a change in routine. Other times, it signals something that needs veterinary attention.

In this comprehensive guide, we will walk through the eight most common reasons dogs stop eating, how to tell the difference between a minor issue and a serious one, when to call your vet, and practical steps you can take right now to help your dog eat again. This article is written with the Philippine context in mind, because heat, humidity, and local lifestyle factors play a real role in canine appetite.

Understanding Your Dog's Appetite

Before we dive into the reasons, it helps to understand what "normal" eating looks like for dogs—because it is not always what we expect.

Dogs are not like cats, who tend to graze throughout the day. Most healthy dogs are meal-oriented eaters. They eat when food is presented, finish within 10 to 20 minutes, and move on. But "normal" varies widely between individual dogs. Some dogs inhale their food in 90 seconds. Others take their time, eating a few bites, walking away, and coming back. Some dogs skip an occasional meal and that is completely normal for them.

The key indicator is change. If your dog has always been a slow eater but is otherwise healthy, energetic, and maintaining weight, there is likely nothing wrong. But if a dog who normally vacuums up their meal suddenly starts leaving food in the bowl, or if a consistent eater goes 24 hours without touching food, that change deserves your attention.

Veterinarians use the term inappetence (reduced appetite) and anorexia (complete loss of appetite) to distinguish between degrees of the problem. A dog who eats less than usual for a day or two is showing inappetence. A dog who flat-out refuses all food for more than 24 hours is showing anorexia. The distinction matters because the urgency and response differ significantly.

8 Common Reasons Your Dog Is Not Eating

Let us go through each one in detail, including the signs to look for and what you can do about it.

1. Dental Pain or Oral Problems

This is one of the most underdiagnosed causes of appetite loss in dogs, and it is especially common in the Philippines, where routine dental care for pets is still not as widespread as in Western countries. Studies suggest that by age three, over 80% of dogs have some degree of periodontal disease. That number climbs even higher in small breeds like Shih Tzus, Pomeranians, Toy Poodles, and Chihuahuas—which happen to be among the most popular breeds in Metro Manila.

What to look for:

• Your dog approaches the bowl with interest but backs away after trying to chew
• Dropping food from their mouth while eating (sometimes called "quidding")
• Chewing on one side of the mouth only
• Excessive drooling, sometimes with blood
• Bad breath that is worse than usual (mabaho ang hininga)
• Pawing at the face or rubbing the muzzle on furniture
• Reluctance to play with chew toys they used to enjoy
• Visible tartar (yellowish-brown buildup) on the teeth, red or swollen gums, or a broken or loose tooth

What to do: If you suspect dental pain, schedule a veterinary dental examination. In the meantime, you can help your dog eat by offering softer food. Hard kibble can be excruciating for a dog with a cracked tooth, an abscess, or inflamed gums. Soft, moist food—like gently cooked fresh food—requires less chewing force and is much easier on a painful mouth. You can also try warming the food slightly, as warm food is softer and releases more aroma, which can encourage eating even when the mouth hurts.

Dental issues do not resolve on their own. Left untreated, they progress and can lead to infection, tooth loss, and bacteria entering the bloodstream, which can affect the heart, liver, and kidneys. Get it checked.

2. Illness or Underlying Medical Conditions

Loss of appetite is one of the earliest and most universal signs that something is wrong in your dog's body. It is a nonspecific symptom—meaning it can point to dozens of different conditions—but it is almost always worth investigating if it persists beyond 24 to 48 hours.

Medical conditions that commonly cause appetite loss include:

• Gastrointestinal issues: gastritis, pancreatitis, inflammatory bowel disease (IBD), intestinal parasites (common in the Philippines due to the tropical climate), foreign body obstruction, gastric ulcers
• Infections: parvovirus (especially in unvaccinated puppies), leptospirosis, canine distemper, bacterial infections, tick-borne diseases like ehrlichiosis (prevalent in the Philippines)
• Organ disease: kidney disease, liver disease, heart disease
• Cancer: tumors can suppress appetite directly or cause nausea and discomfort
• Hormonal disorders: hypothyroidism, Addison's disease, Cushing's disease
• Urinary tract infections: the discomfort and general malaise can reduce appetite
• Pain: any source of pain—arthritis, injury, post-surgical—can cause a dog to stop eating

What to look for: Appetite loss caused by illness is almost always accompanied by other symptoms. Watch for vomiting, diarrhea, lethargy, fever (warm dry nose is not reliable—use a rectal thermometer; normal is 38.3–39.2°C), changes in drinking habits, weight loss, coughing, labored breathing, changes in urine color or frequency, or any behavior that seems "off" from your dog's normal personality. Kung parang hindi siya sarili niya—if they just do not seem like themselves—trust your instinct.

What to do: If appetite loss is accompanied by any of the symptoms listed above, or if your dog has not eaten anything for more than 24 hours (12 hours for puppies under 6 months), contact your veterinarian. Do not wait to see if it resolves on its own. Early detection and treatment of medical conditions almost always leads to better outcomes and lower costs.

3. Stress and Anxiety

Dogs are far more emotionally sensitive than many people realize. Stress suppresses appetite in dogs just as it does in humans, and dogs can be stressed by things that seem minor to us but are genuinely distressing to them.

Common stressors that cause appetite loss:

• Environmental changes: Moving to a new home (lipat bahay), renovations, rearranging furniture, new construction noise in the neighborhood
• Household changes: A new baby, a new pet, a family member moving in or out, a change in work schedules
• Separation anxiety: Being left alone for longer periods than usual, a family member traveling
• Loud noises: Fireworks during New Year (a massive issue in the Philippines), thunderstorms, loud parties, construction
• Routine disruption: Changes in feeding times, walking schedules, or sleep patterns
• Social stress: Conflict with other pets in the household, aggressive dogs in the neighborhood during walks
• Boarding or pet sitting: Being in an unfamiliar environment with unfamiliar people

What to look for: A stressed dog may pace, pant excessively (even when it is not hot), hide, become clingy, tremble, bark or whine more than usual, have accidents in the house despite being housetrained, or refuse food. Some dogs become hyper-vigilant—they are so focused on monitoring the source of stress that they cannot relax enough to eat.

What to do: If you can identify the stressor, address it if possible. If moving to a new home, give your dog a quiet, familiar space with their bed, toys, and bowls. Keep feeding times consistent. Do not force your dog to eat—forcing food on a stressed dog increases anxiety. Instead, offer small amounts of highly palatable, aromatic food in a quiet, comfortable space. Most stress-related appetite loss resolves within a few days as the dog adjusts to the new situation. If anxiety is severe or chronic, consult your veterinarian about behavioral support or anti-anxiety interventions.

4. Food Boredom and Palatability Issues

Let us be honest about this one: sometimes the food is just not appealing enough. This is different from picky eating (which we cover in more detail in our picky eaters guide). Food boredom happens when a dog has been eating the same food for a long time and gradually loses interest.

Kibble is particularly prone to causing food boredom because the extrusion process strips away most natural flavor and aroma. Manufacturers add palatant coatings—sprayed-on animal fat and flavor enhancers—to make the food smell appetizing enough to eat. But over time, even these artificial aromas lose their appeal. Your dog is not being difficult. They are responding rationally to food that does not smell or taste compelling anymore.

What to look for:

• Your dog eats, but slowly, unenthusiastically, or only partially
• They leave food in the bowl and return to it later (or not at all)
• They show interest when you open a different food but not their regular food
• They eat treats and table scraps eagerly but ignore their bowl
• They ate the same food happily for months but are now losing interest

What to do: The most effective solution for food boredom is to upgrade the food itself. Fresh food made from real, gently cooked ingredients has a natural aroma and flavor that dry kibble simply cannot match. If you want to understand the full difference, read our fresh vs kibble comparison. You can also try rotating between different protein sources, warming the food to release more aroma, or adding a small amount of warm water or low-sodium bone broth to dry food to make it more aromatic.

What you should avoid: constantly switching between different kibble brands hoping to find one your dog likes. This creates a cycle of novelty-seeking behavior and can also cause digestive upset from frequent food changes without proper transition periods.

5. Hot Weather and Humidity

This is a big one for pet parents in the Philippines, and it does not get enough attention in most "dog not eating" articles written for temperate climates. The Philippines has an average temperature of 26–34°C for most of the year, with humidity frequently exceeding 80%. During tag-init (March to June), temperatures routinely hit 35–38°C in Metro Manila and surrounding areas. That kind of heat suppresses appetite in dogs significantly.

Why heat reduces appetite:

• Thermoregulation takes priority. Dogs cool themselves primarily through panting, which is metabolically expensive. In extreme heat, the body diverts energy away from digestion toward temperature regulation. Eating and digesting food generates internal body heat (called the thermic effect of food), so the body naturally reduces appetite to avoid generating more heat it cannot get rid of.
• Reduced activity means reduced caloric need. Dogs naturally become less active in hot weather. Less activity means lower energy expenditure, which means less hunger. This is a normal, healthy response.
• Dehydration. Even mild dehydration reduces appetite. Dogs in hot climates lose more water through panting and may not drink enough to compensate, especially if their water bowl gets warm or stale.
• Food spoilage. In the Philippine heat, food left out in a bowl can spoil quickly, especially wet or fresh food. If your dog has had a bad experience with spoiled food, they may be reluctant to eat from their bowl even when the food is fresh.

What to do:

• Feed during the cooler parts of the day—early morning (before 7 AM) and evening (after 6 PM)
• Ensure your dog always has access to fresh, cool water. Change the water multiple times a day. Adding ice cubes helps
• If your dog eats less during summer, do not panic. A 10–20% reduction in food intake during the hottest months is normal. Adjust portions accordingly rather than trying to force a fixed amount. See our feeding calculator for guidance on appropriate amounts
• Serve food at cool or room temperature. Cold food from the fridge can actually be refreshing for dogs in hot weather
• Make sure your dog has access to shade, ventilation, or air conditioning. A comfortable dog is a dog who eats
• Never leave food sitting out for more than 20–30 minutes, especially in warm environments. Pick it up and offer fresh food at the next mealtime

Brachycephalic breeds (flat-faced dogs like Pugs, French Bulldogs, Shih Tzus, and English Bulldogs) are especially vulnerable to heat-related appetite loss because their compromised airways make thermoregulation even harder. If you own a brachycephalic breed in the Philippines, monitoring eating patterns during hot months is particularly important.

6. New Environment or Changes in Routine

Dogs are creatures of habit. They thrive on predictability and routine. When their environment changes—even in ways that seem positive to us—it can disrupt their sense of security and suppress their appetite.

Common environmental changes that affect appetite:

• Moving to a new house or condo
• Traveling or staying in a hotel or relative's house
• Starting daycare or boarding
• New flooring, new furniture, or major home reorganization
• A new feeding bowl, feeding location, or feeding time
• Returning home after a stay at the vet or groomer

This is an especially common scenario in the Philippines, where extended families often live together or near each other, and dogs may be temporarily rehomed with relatives during travel, balikbayan visits, or housing transitions.

What to do: Maintain as much consistency as possible during transitions. Bring familiar items—their bed, their bowls, a blanket or toy that smells like home. Feed at the same times you normally would, in a quiet area where the dog can eat without feeling overwhelmed. Be patient: most dogs adjust to a new environment within three to seven days. During the adjustment period, offering especially appealing food with a strong, natural aroma can help. Resist the urge to hover or coax—standing over a nervous dog while they eat adds pressure, not comfort.

7. Medication Side Effects

Many common medications suppress appetite in dogs as a side effect. If your dog recently started a new medication or had a medical procedure, the timing of their appetite loss is probably not a coincidence.

Medications commonly associated with appetite loss:

• Antibiotics: Can cause nausea and disrupt gut flora, reducing appetite
• Non-steroidal anti-inflammatory drugs (NSAIDs): Pain medications like meloxicam or carprofen can irritate the stomach lining
• Chemotherapy drugs: Nausea and appetite suppression are well-known side effects
• Deworming medications: Can cause temporary nausea, especially with heavy parasite loads (common in the Philippines where parasites are prevalent year-round)
• Vaccines: Mild appetite loss for 24–48 hours after vaccination is normal and not a cause for concern
• Anesthesia: Dogs who have had surgery or dental cleaning under anesthesia commonly refuse food for 12–24 hours afterward

What to do: If you suspect medication is causing appetite loss, do NOT stop the medication without consulting your veterinarian. Instead, call your vet and ask if appetite loss is an expected side effect and whether the timing, dosage, or administration method (with food, without food, etc.) can be adjusted. In the meantime, offer small, frequent meals of highly palatable food. Warming the food can help overcome nausea-related food aversion because the increased aroma stimulates appetite even when the stomach is unsettled.

8. Picky Behavior (Trained Food Refusal)

We need to distinguish between a dog who cannot eat and a dog who will not eat what you are offering because they have learned that holding out leads to something better. This is trained food refusal, and it is extremely common—especially in the Philippines, where the cultural norm of sharing food with our dogs (pahingi naman, Bantay) can inadvertently create picky behavior.

How trained food refusal develops:

1. Dog refuses kibble
2. Worried pet parent offers something better (rice with ulam, lechon scraps, a different brand of food)
3. Dog eats the better food eagerly
4. Dog learns: "If I refuse this food, something tastier will come"
5. Refusing food becomes a strategy, not a symptom
6. The cycle escalates. The dog becomes pickier and pickier because the bar keeps going up

How to tell if it is picky behavior (not a medical issue):

• Your dog refuses their regular food but eagerly eats treats, table scraps, or different food
• They are otherwise healthy: normal energy, normal stools, normal weight, bright eyes, shiny coat
• The refusal is gradual (not sudden) and has been going on for weeks or months
• They eat when they are truly hungry (e.g., after a long walk or an active day)

What to do: The fix for trained food refusal involves two things—breaking the cycle of escalation and offering food that is genuinely appealing enough that the dog does not want to hold out for something else. We have written an entire detailed guide on this: How to Fix Picky Eating in Dogs. The short version: stop offering table scraps, put the food down for 15–20 minutes and pick it up if they do not eat, be consistent, and consider upgrading the base diet to something that actually smells and tastes like real food.

A dog with a genuine food upgrade—one made with real, whole ingredients that smell like actual food—no longer has a reason to hold out. The "better option" is already in the bowl.

Kapag Hindi Kumakain ang Aso Mo: A Quick Diagnostic Checklist

Use this checklist to help narrow down why your dog is not eating:

Question	If Yes, Likely Cause
Has your dog shown interest in food but backed away after trying to eat?	Dental pain or oral problem
Is the appetite loss accompanied by vomiting, diarrhea, lethargy, or fever?	Illness — see your vet
Has anything changed in your home, schedule, or household recently?	Stress or environmental change
Has your dog been eating the same food for months and gradually lost interest?	Food boredom
Is it summer, or has the temperature been unusually high recently?	Heat-related appetite suppression
Did your dog recently move to a new home or stay somewhere unfamiliar?	New environment adjustment
Did your dog recently start a new medication, receive a vaccine, or have surgery?	Medication side effect
Does your dog refuse their food but eat treats, table scraps, or different food eagerly?	Trained picky behavior

If none of these fit, or if multiple factors seem to be at play, a veterinary visit is the safest next step.

When to See the Vet: Red Flags You Should Not Ignore

This is the most important section of this article. While most cases of a dog not eating resolve on their own or with simple adjustments, certain situations require veterinary attention. Do not wait. Dalian mo na.

See your veterinarian immediately if your dog:

• Has not eaten anything for more than 24 hours (12 hours for puppies under 6 months—puppies are more vulnerable to hypoglycemia and dehydration). For more on puppy-specific concerns, see our puppy feeding guide
• Is vomiting repeatedly—especially if the vomit contains blood, is dark brown or black (looks like coffee grounds), or if dry heaving without producing anything (could indicate bloat, a life-threatening emergency)
• Has bloody or black, tarry diarrhea
• Is lethargic or weak—not just tired, but genuinely lacking the energy to stand, walk, or respond to you normally
• Has a distended or hard abdomen—especially in large, deep-chested breeds. This could be gastric dilatation-volvulus (GDV/bloat), which is fatal without emergency surgery
• Is drinking excessively or not drinking at all
• Has pale, white, blue, or yellow gums (healthy gums should be pink and moist)
• Has difficulty breathing or is panting excessively without apparent cause
• Has been losing weight over the past few weeks
• Is an unvaccinated puppy refusing food—parvovirus is common in the Philippines and is rapidly fatal without treatment
• Could have eaten something toxic or a foreign object (bones, toys, fabric, chemicals, chocolate, xylitol/birch sugar, grapes, onions)
• Is elderly (8+ years) and suddenly stops eating—senior dogs who suddenly lose appetite warrant prompt investigation

Emergency Warning: If your dog is not eating AND showing any combination of the symptoms above, this is a veterinary emergency. In Metro Manila, several veterinary clinics offer 24/7 emergency services. Have your vet's emergency number saved in your phone before you need it. Huwag hintayin na lumala pa.

What to Do Right Now If Your Dog Is Not Eating

You have identified the possible cause. Now here is a practical, step-by-step plan you can follow today:

Step 1: Rule Out Emergencies

Go through the red flags list above. If any apply, call your vet now. Everything else can wait—your dog's safety cannot.

Step 2: Check the Environment

Is it excessively hot? Is the feeding area noisy, chaotic, or near something that could be stressing your dog? Is the bowl clean? (Dogs can smell residue from old food that you cannot detect.) Is the food fresh and within its use-by date? Is the water bowl full of fresh, cool water?

Step 3: Try Making the Food More Appealing

Before you change the food entirely, try these simple tricks:

• Warm it up. Gently warming food to body temperature (around 38°C) releases more volatile aromatic compounds, which stimulate appetite. Ten seconds in the microwave or a few minutes at room temperature works.
• Add warm water or low-sodium broth. This increases moisture, releases aroma, and changes the texture. Some dogs who refuse dry food will eat the same food once it has been "souped up."
• Try a different bowl. Metal bowls can reflect light and create noises that bother some dogs. Ceramic or stainless steel with a rubber base can help. Shallow, wide bowls are often preferred by flat-faced breeds.
• Move the bowl. Try feeding in a quieter location, away from foot traffic, other pets, and household noise.
• Hand-feed a few bites. Sometimes getting the first few bites in is enough to trigger appetite. Offer food from your hand, then place the rest in the bowl.

Step 4: Evaluate the Food Itself

If your dog has been on the same kibble for months or years, the food may simply be the problem. Dogs experience food fatigue just as humans do, and processed kibble—no matter how "premium" the label claims—lacks the natural aroma, moisture, and texture of real food.

Fresh food made from real, gently cooked ingredients smells like food because it is food. The natural aroma of real beef, chicken, fish, and vegetables is inherently more stimulating to a dog's senses than artificial palatant coatings on processed kibble. For dogs whose appetite loss is related to food boredom, palatability issues, dental pain (due to the softer texture), or the desire for something that actually tastes good, upgrading the diet can be transformative.

If you are considering a switch, doing it properly matters. A gradual transition over 7 days protects your dog's digestive system. Our transition guide walks you through the process day by day.

Step 5: Establish a Consistent Routine

Dogs eat best when mealtimes are predictable. Feed at the same times every day—ideally twice a day for adult dogs, three times for puppies. Put the food down for 15–20 minutes. If your dog does not eat, pick it up without fuss. Offer food again at the next scheduled mealtime. No treats, no table scraps, no negotiations in between.

This approach feels harsh to loving pet parents, but it is actually kind. It teaches your dog that food is available at predictable times, eliminates the anxiety of irregular feeding, and prevents the escalation cycle of trained food refusal. A healthy adult dog will not starve themselves. They will eat when they are genuinely hungry, and they will learn that mealtime is the time to eat.

Step 6: Monitor and Document

Keep a simple log for a few days:

• How much food was offered vs. how much was eaten
• Time of day and environmental conditions (temperature, noise, household activity)
• Any other symptoms: energy level, stool quality, vomiting, behavior changes
• Treats or table scraps given (be honest—this matters)

This log is invaluable if you end up visiting the vet. It transforms "my dog is not eating" from a vague complaint into actionable data your vet can use to diagnose more quickly and accurately.

Special Considerations for Puppies

Puppies are not small adults. Their nutritional needs, vulnerability to illness, and metabolic rates are fundamentally different, which means appetite loss in a puppy should be taken more seriously and responded to more quickly than in an adult dog.

Why puppies are higher risk:

• Hypoglycemia. Puppies, especially toy breeds under 2 kg, have very limited glycogen reserves. Missing even one meal can cause blood sugar to drop dangerously low, resulting in weakness, trembling, seizures, or worse.
• Dehydration. Puppies dehydrate faster than adult dogs. A puppy who is not eating is often also not getting adequate moisture, especially if they are on a dry-food diet.
• Parvovirus. Parvo is still widespread in the Philippines, especially in areas with unvaccinated dog populations. The first sign is often sudden loss of appetite, followed by severe vomiting and bloody diarrhea. It is rapidly fatal without emergency veterinary treatment. If your unvaccinated or incompletely vaccinated puppy stops eating, assume it could be parvo until proven otherwise.
• Parasites. Intestinal parasites are extremely common in puppies in the Philippines. Heavy worm burdens cause nausea, abdominal discomfort, and appetite loss.

Rule of thumb: If a puppy under 6 months has not eaten for 12 hours, or a puppy under 12 weeks has not eaten for 8 hours, contact your vet. Do not wait a full 24 hours as you might with an adult dog.

For more detailed information on feeding puppies, including how much to feed at each age and growth stage, see our puppy feeding guide for the Philippines.

Special Considerations for Senior Dogs

Older dogs (typically 7+ years, though this varies by breed and size) experience changes in appetite for reasons that differ from younger dogs.

• Reduced sense of smell. A dog's sense of smell naturally declines with age. Since aroma is the primary driver of canine appetite, this decline directly reduces mealtime enthusiasm. Food with stronger natural aromas—like gently cooked fresh food served warm—can compensate for this sensory decline.
• Dental deterioration. Years of wear, periodontal disease, and tooth loss make chewing painful or difficult. Senior dogs often benefit enormously from switching to softer food.
• Reduced activity and metabolism. Seniors naturally need fewer calories, so some reduction in appetite is normal and healthy. The concern is when appetite drops beyond what the reduced caloric need would explain.
• Chronic conditions. Kidney disease, liver disease, heart disease, diabetes, and cancer are all more common in senior dogs and all affect appetite. Regular veterinary checkups (at least twice a year for seniors) help catch these conditions early.
• Cognitive decline. Dogs can develop canine cognitive dysfunction (similar to dementia in humans). Some affected dogs forget to eat, become confused at mealtimes, or wander away from the bowl.

If your senior dog's appetite has decreased, a veterinary checkup is always a good idea. Many causes of appetite loss in seniors are treatable or manageable when caught early.

Can Changing the Diet Help?

For many of the causes on this list—food boredom, palatability issues, dental pain, heat-related appetite suppression, picky behavior, and age-related smell decline—the food itself is either the root cause or a major contributing factor. In these cases, upgrading the diet can genuinely make a difference.

Fresh food has distinct advantages for dogs with appetite problems:

• Natural aroma. Real meat, fish, and vegetables produce aromatic compounds that trigger appetite in a way that artificial palatant coatings on kibble cannot replicate. For dogs who have "just lost interest" in their food, the smell of real food often reignites the desire to eat.
• Softer texture. Gently cooked food with 60–70% moisture content is dramatically easier to eat than hard, dry kibble. For dogs with dental pain, oral surgery recovery, or age-related tooth loss, this can be the difference between eating and starving.
• Higher moisture content. Dogs eating fresh food get significant hydration from their food itself, which is especially valuable in the Philippine heat and for dogs who do not drink enough water on their own.
• Recipe variety. The ability to rotate between different protein sources (beef and fish, pork and chicken and fish, fish-based) keeps meals interesting without the digestive disruption of switching between completely different brands with different formulation philosophies.

This is not a magic solution for every case of appetite loss. A dog who is not eating due to parvovirus, a foreign body obstruction, or organ failure needs veterinary medicine, not a diet change. But for the majority of appetite issues pet parents encounter in day-to-day life—the food boredom, the heat-related dip, the pickiness, the dental sensitivity—what is in the bowl matters enormously.

Frequently Asked Questions

How long can a dog go without eating?

A healthy adult dog can technically survive without food for several days, but that does not mean you should wait that long. If your dog has not eaten anything for 24 hours, it is time to investigate. For puppies under 6 months, the threshold is 12 hours. For puppies under 12 weeks or toy-breed puppies under 2 kg, call your vet after 8 hours of food refusal. Dehydration and hypoglycemia can develop much faster in small and young dogs.

My dog is not eating but is drinking water normally. Should I worry?

A dog who is drinking but not eating is generally in less immediate danger than one who is refusing both food and water. Still, it warrants attention. Drinking water while refusing food can indicate nausea, dental pain, stress, or early stages of illness. If the behavior lasts more than 24 hours, or if it is accompanied by lethargy, vomiting, or diarrhea, see your vet. The fact that they are drinking is a good sign, but it does not rule out an underlying issue.

Why does my dog only eat at night?

In the Philippines, this is often heat-related. Dogs may refuse food during the heat of the day and only eat once the temperature drops in the evening. This is a natural adaptation—digestion produces internal body heat, and dogs instinctively avoid eating when they are already struggling to stay cool. Try feeding earlier in the morning (before 7 AM) and again in the evening (after 6 PM). If your dog consistently prefers eating at night and is otherwise healthy, it may simply be their preference, and that is fine.

Should I force-feed my dog if they refuse to eat?

No. Force-feeding (syringe feeding, forcing the jaw open, etc.) is stressful, can cause aspiration (food entering the lungs), and creates negative associations with mealtime that make the problem worse. The only exception is if your veterinarian has specifically instructed you to syringe-feed a recovery diet for a medically compromised dog. In all other cases, make the food more appealing and let your dog choose to eat on their own terms.

Is it normal for dogs to skip meals sometimes?

Yes, occasional meal-skipping is normal for some dogs and is not automatically a cause for concern. Some dogs naturally eat less on rest days, during hot weather, or when their routine is slightly disrupted. The key question is whether this is a pattern for your specific dog or a new behavior. A dog who has always been a relaxed, "take it or leave it" eater is different from a dog who suddenly stops eating after months of consistent mealtime enthusiasm. Trust your knowledge of your individual dog.

Can anxiety medications help a dog who is not eating due to stress?

In some cases, yes. If your dog's appetite loss is clearly tied to chronic anxiety (not just temporary situational stress), your veterinarian may recommend anti-anxiety medication, calming supplements, or behavioral modification techniques. These are especially relevant for dogs with separation anxiety, noise phobias (very common in the Philippines around New Year and fiesta celebrations), or generalized anxiety disorder. Medication should always be combined with environmental management and behavioral support, not used as a standalone solution.

My dog will not eat kibble but eats fresh food. Is the kibble the problem?

Very likely, yes. This pattern—refusing processed dry food while eagerly eating fresh, real food—is one of the strongest indicators that the food itself is the issue, not your dog. Kibble lacks the aroma, moisture, and texture of real food, and some dogs simply reach a point where they are not willing to eat it anymore. If your dog eats fresh food with genuine enthusiasm, they do not have a medical appetite problem. They have a food quality preference. Listen to your dog. For a detailed comparison, read our fresh vs kibble breakdown.

How do I know if my dog is not eating because of pain?

Dogs are notoriously good at hiding pain, which makes this tricky. Signs that pain may be suppressing appetite include: reluctance to move or walk, whimpering or yelping when picked up or touched in certain areas, changes in posture (hunched back, tucked abdomen), trembling, panting without obvious cause, and behavioral changes like increased aggression or withdrawal. If your dog's appetite loss coincides with any of these signs, a veterinary examination is essential. Pain can come from dental disease, arthritis, injuries, gastrointestinal issues, or many other sources that are not visible from the outside.

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Dealing with a picky eater rather than a medical issue? Read our complete guide: How to Fix Picky Eating in Dogs: The Filipino Pet Parent's Guide

Written by the McDuffy Nutrition Team. McDuffy is the Philippines' first human-grade, AAFCO-balanced fresh dog food, formulated by American board-certified veterinary nutritionists and delivered fresh to your door in Metro Manila.