Symptom triage · dogs, cats, rabbits, birds, small pets and reptiles
Not eating
Not eaten for 24 hours (12 hours for rabbits/small pets)
Quick answer
Guides for not eating
Dogs
Why Is My Dog Not Eating?
A dog skipping one meal is not always serious, but **refusing food for 24 hours** — especially with vomiting, lethargy or abdominal pain — needs a vet check.
Cats
Cat Not Eating
When a cat stops eating, take it seriously.
Rabbits
Why Is My Rabbit Not Eating?
A rabbit that stops eating or passing droppings is a **veterinary emergency in the UK**.
Birds
Bird Care in the UK
UK pet birds need a **species-correct diet** (not seed alone), the largest suitable cage, daily out-of-cage exercise where safe, and an avian vet registered before illness strikes.
Reptiles
Reptile Care in the UK
UK pet reptiles need a **precise thermogradient**, appropriate UVB for diurnal species, correct humidity, and species-specific diet.
Small pets
Guinea Pig Care in the UK
UK guinea pigs need **daily vitamin C**, unlimited hay, compatible company, and a spacious indoor setup with daily exercise.
Frequently Asked Questions
- Is not eating an emergency in pets?
- It needs same-day attention but is not usually life-threatening. Call your vet today; if signs worsen or new red-flag symptoms appear, treat it as an emergency.
- Which pets does not eating affect?
- This triage topic applies to dogs, cats, rabbits, birds, small pets and reptiles. If your pet shows these signs, use the free PETHEALTH+ symptom checker for instant triage or phone your vet.
- What should I do right now?
- PETHEALTH+ rates this as urgent — call your vet today for a same-day appointment. The guides linked on this page explain likely causes and what your vet may suggest. Information only, not a diagnosis.
Not sure how urgent it is?
Answer two questions and the free PETHEALTH+ symptom checker will tell you whether to phone a vet now, today, or monitor at home.