Why Your Dog Is Not Eating and When to Call the Vet
An appetite change deserves attention, even if your dog still seems cheerful or accepts a treat. Dental pain, nausea, illness, stress and food changes can look similar at home. Do not assume your dog is being stubborn or waiting for a better meal.
Contact your veterinary team first
Call your veterinary team when your dog's eating habits change. Explain when they last ate a normal meal, whether they are drinking, and any other changes you have noticed. Your vet can advise how quickly they need to be seen.
Do not use a blanket 24- or 48-hour waiting rule. VCA recommends prompt evaluation for reduced appetite and lists more than 12 hours without food as a reason for urgent care. This is not advice to wait 12 hours before calling. A dog with diabetes that refuses even one meal needs prompt veterinary advice; young puppies and dogs that seem unwell may also need help sooner. VCA urgent-care guidance
A swollen belly or repeated attempts to vomit without bringing anything up needs emergency veterinary attention. Do not wait for another mealtime. PDSA guidance on bloat
What might be behind the change
A sore mouth can make chewing difficult. Pain elsewhere, digestive problems, infections and other illnesses can also reduce appetite. A new home, a disrupted routine or a diet change may play a part, but those explanations should not be used to rule out illness. PDSA appetite guidance
Notice whether your dog approaches food and then backs away, drops food, chews differently, or refuses everything. These observations are useful to your vet; they are not a diagnosis.
What to record before you call
- The last normal meal and roughly how much food has been eaten since.
- Drinking, urination and bowel movements compared with normal.
- Vomiting, diarrhea, drooling, low energy or signs of pain.
- Current medicines, recent diet changes and anything your dog may have swallowed.
- Your dog's age and known medical conditions.
Keep medication packaging available. Do not stop prescribed treatment or add appetite remedies without veterinary advice.
If your vet recommends care at home
Follow the feeding plan they give you rather than cycling through new foods or trying to make your dog wait out their hunger. Offer a quiet feeding area away from other pets, and keep fresh water available unless your vet instructs otherwise.
Ask before adding broth, toppers or homemade meals, especially if your dog has a prescribed diet. Do not force-feed. If your dog eats a little but continues eating less than normal, or develops new symptoms, update your vet rather than assuming the problem is solved.
The useful next step
An appetite problem calls for an assessment, not a shopping list. A clear account of what changed will help your veterinary team decide what to do next.
This article provides general information and does not diagnose your dog or replace veterinary care.

