Cheese in small amounts is generally not bad for dogs to eat, but some dogs may have trouble digesting it. Most dogs are lactose intolerant, but cheese is typically low in lactose.
Cheese is usually fine as an occasional treat. Most dogs enjoy the taste, so it can be a good high-value training treat, or it can be used to mask the taste of a pill if the dog needs medication. Owners should pay attention to their dogs for signs of digestive upset after feeding them cheese. If a dog experiences no adverse effects such as loose stools or diarrhea, cheese is probably safe for that dog to eat.