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My 12-year-old 8-kilogram terrier mix has had loose stools for two days after eating a bowl of plain couscous — is couscous the cause?

Dogs · Food safety

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

Short answer

Couscous itself is generally safe for dogs, but it is made from wheat and some dogs with sensitive guts can react to grain-based foods. The loose stools may be a sensitivity rather than a poisoning issue. Stick to bland, familiar food for the next day or two and ensure she stays hydrated. If the diarrhea persists beyond two days, becomes bloody, or she loses her appetite, schedule a visit with your vet.

Couscous — Food safety facts

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

Plain cooked couscous is safe. Watch for added stock or seasoning.

Dogs and cats carry the same rating (Safe to share), so the notes below hold for either pet.

Couscous is not toxic to dogs. The real limit is calories, fat and salt, so treat it as a small extra alongside the normal ration rather than a meal in itself.

There is no poisoning risk here, and the usual problem is simply eating too much at once: a heavy fat or salt load can bring on loose stools or a single vomit. Offer water, keep an eye on the pet for 24 hours, and do not induce vomiting.

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

Open the full food page: Couscous food facts →