What makes it harmful
tremorgenic mycotoxins (Penitrem A, roquefortine) from Penicillium mold; also aflatoxins and other molds
How much is dangerous
The danger isn’t the food itself but the MOLD growing on it. Dogs raiding trash, compost bins, or eating moldy bread/cheese/walnuts ingest Penitrem A and roquefortine — neurotoxins that cause tremors and seizures (Merck Veterinary Manual). There is no safe amount of moldy food; even a small piece can affect a sensitive dog.
Symptoms to watch for
Mild / early
- • Vomiting
- • Mild tremors
- • Restlessness
- • Panting
Severe — vet urgently
- • Severe whole-body tremors
- • Seizures
- • Dangerously high body temperature
- • Death
What to do if eaten
Tremorgenic mycotoxin poisoning is an emergency. If a dog eats moldy food or raids compost and shows any tremors, get to a vet immediately — it can be fatal. Secure trash and compost bins to prevent it.
Frequently asked questions
- Can dogs eat moldy food & compost?
- Dangerous — mold on spoiled food or compost can cause tremors and seizures in dogs. The danger isn’t the food itself but the MOLD growing on it. Dogs raiding trash, compost bins, or eating moldy bread/cheese/walnuts ingest Penitrem A and roquefortine — neurotoxins that cause tremors and seizures (Merck Veterinary Manual). There is no safe amount of moldy food; even a small piece can affect a sensitive dog.
- What happens if a dog eats moldy food & compost?
- Symptoms can include vomiting, mild tremors, restlessness, panting, severe whole-body tremors, and more. Severity depends on the amount and your dog’s size.
- What should I do if my dog ate moldy food & compost?
- Tremorgenic mycotoxin poisoning is an emergency. If a dog eats moldy food or raids compost and shows any tremors, get to a vet immediately — it can be fatal. Secure trash and compost bins to prevent it.
Sources: Merck Veterinary Manual · ASPCA Animal Poison Control.
⚠️ For general guidance, not veterinary advice. Toxicity depends on your dog’s size, the amount eaten, and individual sensitivity. Always confirm with your vet for health decisions.