Blue Cheese may be more dangerous than regular dairy products for our dogs. It is fairly well known that feeding your dog dairy products is not the best of choices. Dogs do not have significant amounts of the lactase enzyme that allows the lactose in milk to be broken down.
Blue Cheeses like Stilton and Roquefort on the other hand may contain a neurotoxin known as Roquefortine C. Roquefortine C can cause diarrhea and vomiting when eaten in smaller doses and in larger amounts could potentially cause seizures, elevated temperature, twitches and tremors.
Contact your vet if you think your dog has eaten blue cheese and seek their immediate advice.