My 6 kg cat ate about half an orange's worth of flesh in one go — is that amount too much for her

Short answer

Yes, half an orange is too much for a cat. While the flesh itself isn't toxic, that much citrus fruit is high in sugar and acid, which can cause vomiting, diarrhea, or an upset stomach. She might also have gotten some of the bitter white pith, which is harder to digest. Offer her plenty of fresh water and watch her litter box for loose stools over the next day. If she vomits more than once or seems lethargic, call your own vet. Next time, stick to a tiny piece the size of a pea as a rare treat.

Orange — Food safety facts

Feed with care · Cats · full breakdown on the linked food page

Flesh is safe in small amounts; the peel is hard to digest and essential oils can upset the stomach.

Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.

Orange is not poisonous to cats, but it is easy to over-feed. Rich fat, salt or seasoning can bring on vomiting or diarrhoea within a day, and repeated large portions are a recognised trigger for pancreatitis.

If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.

Orange can turn up now and then, but not as a daily habit: keep the rest of the day's food unchanged and watch the litter box and how quickly they finish the next meal.

The full verdict, portion guidance and serving notes are collected on the Orange food facts page.

Open the full food page: Orange food facts →

My 6 kg cat ate about half an orange's worth of flesh in one go — is that amount too much for her stomach?

Orange — Food safety facts

Owners also ask