My dog has started to growl at me and hate me since the summer holidays. I have not hit him or hurt him in anyway. But now whenever I go near him, he growls at me. When he looks at me, he looks at me like his scared of me or is ashamed of me.
I don't know what has happened to him. We had his balls done (Sorry don't know how to spell the proper word for it), a couple of weeks ago and it's done nothing. When we took him to vets, they checked him and his perfectly healthy, so it's really confusing whats gone wrong with him.
I'm 13 year olds and I really want my dog to be my friend again, if anyone knows whats wrong with him or can give ideas, please answer.

