We have been taking Toopie out trying to socializing him as best as possible, but now he is getting worse. If people come over to him he growls violently and barks and snaps at them. He hasn't bitten anyone. But I'm afraid he will. He is alright around other animals. If a dog doesn't let him smell their butt he gets grumpy but other than that he is ok. He's not food aggressive, he doesn't chase cars/bikes or cats. He went to training school and we are going back because he didn't get everything down. I just need some advice on how to help him. He is such a sweet boy, but no one believes me.