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

My 12 kg dog ate a cooked scallop that had been left out overnight on the dinner plate. Should I worry about spoilage?

Dogs · Food safety

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

Short answer

Yes, spoilage is the main concern here. Cooked scallops left out overnight can harbor bacteria that cause vomiting and diarrhea. Plain cooked scallops are safe for dogs, but once they sit out, the clock starts ticking. Watch your 12 kg dog for vomiting, loose stools, or loss of appetite over the next 12 to 24 hours. If she shows any of those signs, call your vet. Otherwise, just monitor her and offer fresh water — most dogs tolerate a single bad bite without serious consequences.

Scallops — Food safety facts

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

Plain cooked scallops are safe. Never serve them in garlic butter.

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

Scallops 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.

Why these cautions matter

Garlic and onion damage a pet's red blood cells and can bring on anaemia. Signs are often delayed for several days, so looking fine straight afterwards does not rule it out.

Rich, fatty food is the classic trigger for pancreatitis, a painful inflammation of the pancreas that usually needs veterinary treatment rather than rest alone.

Scallops can stay on the rotation, but only as an extra mouthful: keep the rest of the day's food unchanged and watch the next walk and the stool that comes with it.

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

Open the full food page: Scallops food facts →