Agressive Australian Sheperd pupoy 12 weeks old
This puppy attacks everyone including a very mellow 3 year old doggie. He won't back down. You can be calm, yell, scream NO but he keeps coming at you. His bites are not nips they are deep and yesterday he latched onto my right arm while my left one held a cup of hot coffee. As people were in living room with me I yelled for help. He was dangling on my arm and would not let go. I was like a cut of roasr beef for him. Is there something wrong with his brain?