I recently just got a blue nose pitbull puppy. He is only 10 weeks old. When we first got him
he was biting but not letting go. We thought it was teething. He is currently registered at petsmart for training. But the three weeks we have had him he has gotten worse. He now bites harder when told no. & we tried everything from telling him no & igorning him. Tapping his nose & but. Saying ouch loudly. & a spray bottle. He has plently of toys. But nothing works. He even growls. I don't know what to do. Has anyone else had this problem?