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My cat ate a few hemp seeds that were left out overnight. Is that safe?

Cats · Food safety

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

Short answer

Yes, plain hemp seeds are safe for cats, but spoiled ones can cause an upset stomach. Watch for vomiting, diarrhea, or a lack of appetite over the next day. If your cat shows any of these signs, call your regular vet for advice.

Hemp seeds — Food safety facts

Safe to share · Cats · full breakdown on the linked food page

Shelled hemp hearts are safe in small amounts. Hemp leaves and flowers are not.

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

Open the full food page: Hemp seeds food facts →

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