I took in this dog because original owners was giving it up to the spca due to not having any time for it. At the time I rescued him, he was only four months old ( at least that’s what they said when giving him to me. ). I knew nothing about the dog or its owners, I just happen to cross paths with them as they were at the pound asking to surrender the dog. It’s now been almost a year since I’ve had this dog and on several occasions this dog has bitten me or gets into vicious mode like he will bite me. It’s like he has moments where he forgets who I am and goes into defensive mode for no reason. I give this dog everything, I bring him everywhere with me. He’s not an aggressive dog that does this to anyone and everyone. He’s very friendly towards other dogs, often to friendly. I just don’t know why this dog will turn around and bite me. How should I respond to this dog when he behaves like this, and how to stop this from happening.