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My 12 kg Corgi ate about half a cup of frozen blueberries from the bag — is that too many?

Dogs · Food safety

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

Short answer

No, that amount is perfectly fine for a dog of his size. Blueberries are a safe, low-calorie treat rich in antioxidants, and the frozen form is just as safe as fresh. The main risk with any fruit treat is overdoing it and causing an upset stomach or loose stools, but half a cup for a medium-sized dog is well within a reasonable treat portion. Just ensure they were plain and washed before freezing, and continue to offer them as an occasional snack.

Blueberry — Food safety facts

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

A safe, healthy treat — washed and whole. Good source of antioxidants.

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

Blueberry 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 Blueberry food facts page.

Open the full food page: Blueberry food facts →