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My 20-pound dog ate a whole orange with the peel — the other dogs didn’t touch it. What should I do?

Dogs · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Watch your dog closely. The peel is hard to digest and can cause vomiting or diarrhea. Keep the uneaten oranges out of reach of your other pets. Offer your dog some plain water and call your vet if you see stomach upset or lethargy.

Orange — Food safety facts

Feed with care · Dogs · 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 dogs, 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.

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

Open the full food page: Orange food facts →