Aggression - fear - protecting ???? Help
Hi - I just got my first dog ever and he is a German Shep. He is only 4 months but he get aggressive towards other dogs, but only sometimes. He plays so well in my boyfriends families pack of 7 dogs of al dofferent breeds. But when another female dog came over to my parents he freaked out and his hair stood up on his back and showed his teeth when he was barking like crazy. I know they have loud barks but I don't like how he can be nasty with some dogs and fine with others. We like to take him places and I do not want to worry how he will act when another dog comes into play. Any sugestions, because we have him in puppy PetSmart classes and does so well with all his commands.