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My 10 kg dog ate about a cup of chia seed pudding that was left out overnight and now has a fuzzy blue spot on top — is mold dangerous here?

Dogs · Food safety

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

Short answer

Yes, mold is the main risk. Some molds produce toxins that can cause vomiting, tremors, or even seizures in dogs. The soaked chia seeds themselves are safe, but the spoiled dairy or other ingredients in the pudding are the problem. Watch him closely for the next 24 hours for vomiting, diarrhea, loss of coordination, or unusual lethargy. Offer plenty of fresh water to help flush his system. If you see any of those neurological signs, call your vet immediately — do not wait for them to worsen.

Chia seeds — Food safety facts

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

Safe when soaked or mixed into wet food. Dry chia swells and can block the throat.

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

Chia seeds 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.

Chia seeds 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 Chia seeds food facts page.

Open the full food page: Chia seeds food facts →