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My dog ate a clementine that was left out for a day. Is it okay?

Dogs · Food safety

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

Short answer

It depends on its condition. A slightly dried-out segment is usually fine, but if it was mouldy or fermented, it could cause an upset stomach. Watch for vomiting, diarrhea, or loss of appetite over the next day. Offer your dog some water and call your vet if you see any of those signs.

Clementine — Food safety facts

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

Flesh only, a segment or two. Peel, pith and seeds are the problem.

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

Open the full food page: Clementine food facts →