Also called · taste aversion · sudden food refusal · refuses food after medication
What it looks like
- Ate it fine yesterday, refuses it today
- Avoids a specific food after being sick or vomiting
- Stops eating after a vet visit
Why it happens
Conditioned taste aversion
Animals learn to avoid food associated with illness, particularly gastrointestinal illness. The striking part is that the taste and smell of the food and the feeling of being unwell can be linked even when they are hours apart.
What to do
If you expect stomach trouble, do not feed that food within 24 hours
This is the most practical rule here. Within 24 hours of an expected gastrointestinal problem, do not feed the food you want them to keep eating long term. They may refuse it for life.
Keep medication separate from meals
If you hide medication in food and it coincides with feeling ill, the food takes the blame. Bitter medication in particular is almost always detected by cats.
Go back to the familiar food first
Under strong stress animals tend to be wary of new food and refuse it. Returning to what they know works better than pushing something new.
Check the state of the food
Also check whether the bag has been open long enough to lose aroma or oxidise. It may be a change in the food rather than conditioning.
Watch out for
A narrow range of accepted foods plus a learned aversion means that when illness finally requires a prescription diet, the options are gone.
See a vet if
Repeated vomiting
Common questions
It varies a lot between animals. Rather than forcing a retry, it is far easier to prevent it — do not feed a food you rely on while they are unwell.
Related behaviors
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General behaviour and nutrition information. It does not replace diagnosis or prescription. Similar behaviour does not always have the same cause, and the cause is not necessarily diet or environment — have a vet rule out illness first, and consult a behaviour specialist where needed.