Hi, my name is Alex, I’m training already for a long time dogs now (25years). When dogs are a sleep this things happens, it can be that the experience with the other dog course this. Even when the dog is put a sleep by the vet it is possible that he will bite you. This happened to me a year ago. The vet and me where making an x-ray from a GSD and the dog was good sleeping. I had he head in my hands and he came up bite and sleep again. I like to ask you something. Is your dog reacting like an alpha dog if you put pressure on him? Do you have children at home? If yes how old are they? Let me know I will help you out.
Greetings
Alex
