Every dog is different. Individual allergies and sensitivities are common — always introduce new foods in small amounts and watch for adverse reactions. This site is for informational purposes only and is not veterinary advice. Always consult your vet.
Brief Answer
Dogs must not eat blue cheese. The mould used to make blue cheese produces roquefortine C, a substance that is toxic to dogs and can cause vomiting, diarrhoea, tremors, and seizures. All varieties — including Stilton, Roquefort, and Gorgonzola — should be avoided.
The Full Picture
Blue cheese should not be given to dogs. The mould cultures used to make blue cheese (Penicillium roqueforti) produce a substance called roquefortine C, which is toxic to dogs. Ingesting blue cheese can cause vomiting, diarrhoea, high temperatures, and in severe cases, seizures. The risk is higher with very ripe or heavily moulded blue cheeses. In addition to the mould toxin, blue cheese is also very high in fat and sodium, which can cause pancreatitis and other health issues. This applies to all varieties of blue cheese including Stilton, Roquefort, Gorgonzola, and Danish Blue. If your dog eats blue cheese, monitor for symptoms and contact your vet if you notice any adverse reactions.
Signs to Watch For
- Vomiting and diarrhoea, often within hours of ingestion
- High temperature and fever
- Muscle tremors and twitching
- Seizures in severe cases
- Restlessness, agitation, and disorientation
- Rapid breathing or panting
If your dog has eaten blue cheese, contact your vet immediately, especially if you notice tremors, seizures, or a high temperature. Early veterinary intervention gives the best outcome. Bring any packaging so your vet can identify the exact variety consumed.
What You Should Know
Blue Cheese should be kept well away from dogs. If your dog has eaten blue cheese, watch for symptoms such as vomiting, diarrhoea, lethargy, or loss of appetite. In an emergency, contact your veterinarian or an animal poison helpline straight away.