Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My senior cat knocked over a colleague's salad and nibbled arugula leaves from her lunchbox at the office — is this a problem?

Cats · Food safety

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

Short answer

No, this is not a problem. Arugula is a safe green for cats in small amounts and is sometimes even added intentionally to pet salads and commercial cat treats as a nutritious supplement. The only consideration with a senior cat is that sudden introduction of fibrous greens could cause mild digestive upset simply because older cats have slower metabolisms. Offer a bit of fresh water and watch for any loose stools, but otherwise there is nothing to worry about here.

Arugula — Food safety facts

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

Safe in small amounts as a green treat.

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

Arugula is not toxic to cats. 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 Arugula food facts page.

Open the full food page: Arugula food facts →