Cats
Prolonged inadequate intake can contribute to hepatic lipidosis, especially in overweight cats; seek prompt veterinary advice.
SYMPTOM → WHAT DO I DO?
Not eating
Appetite loss can signal pain, nausea, dental disease or an emergency.
CALL YOUR VETERINARIAN PROMPTLY
READ THIS FIRST
Observations can help your veterinarian. They cannot rule out an emergency.
Contact an emergency veterinary facility immediately for difficult breathing, collapse, ongoing seizures, inability to urinate, major bleeding, abnormal gum color, sudden severe abdominal swelling or rapidly worsening weakness.
What could be behind this symptom?
These are possibilities, not a diagnosis. The right explanation depends on the examination, species and medical history.
- Dental pain, nausea, infection, fever or gastrointestinal disease
- Kidney, liver or endocrine disorders
- Stress, medication effects, environmental problems or inappropriate food
- Urinary obstruction, gastrointestinal stasis, toxic exposure or severe pain
What can you safely check at home?
Write down what you see and bring photographs or video only when doing so does not delay care.
- When the last normal meal occurred and how much was actually consumed
- Whether the animal approaches food, drops food, drools or struggles to chew
- Water intake, stool, urine, breathing, movement and body temperature if known
- Recent diet, housing, medication or household changes
Avoid actions that can make things worse.
- Do not wait for a prey species to become visibly weak before calling.
- Do not force-feed an animal that may be obstructed, bloated, unable to swallow or struggling to breathe.
- Do not stop or adjust insulin or other medication without veterinary instructions.
- Do not assume an apparently picky animal is safe if it is losing weight.
When should you contact your veterinarian?
- Call promptly for any meaningful change in eating, especially in a cat, diabetic animal, juvenile, senior or animal with chronic disease.
- Discuss the last food, stool and urine observed and any weight change.
- Ask for species-specific timing because safe monitoring windows vary.
Get emergency help immediately if you see:
- A rabbit or guinea pig eating little or nothing, producing fewer droppings, or appearing painful
- A bird sitting fluffed on the enclosure floor or rapidly losing weight
- A donkey refusing food, an animal that cannot urinate, severe weakness, collapse or breathing trouble
The same symptom can mean different things in different animals.
Rabbits & small mammals
Appetite loss with fewer fecal pellets suggests gastrointestinal slowdown or obstruction and warrants urgent care.
Birds
Small birds can deteriorate quickly; use a gram scale and contact an avian veterinarian promptly.
Domestic equines
A donkey that stops eating is at particular risk of hyperlipemia; colic signs also require emergency assessment.
TRUSTED SOURCES
Sources behind this guidance
American Veterinary Medical AssociationFirst aid tips for pet owners and limits of home care ↗Merck Veterinary ManualVeterinary professional and pet-owner disease references ↗Merck Veterinary Manual: urinary obstructionWhy urinary blockage in cats requires immediate veterinary attention ↗
These educational resources support a conversation with your veterinary team. They do not replace examination, diagnosis or species-specific emergency care.