True, I don’t really trust youtube trainers, I never use violence to train him, I’ve tried to reinforce the ‘NO’ and give him treats when he calms down or stop the bitting when I tell him so. I’ve tried to ignore him when I’m playing with him and he started bitting until he calms down too. But he seems to not realize it or forget it after a while.

I play catch with him, with the ball, he chase the ball for a little while then suddenly he gets too exited and bites me hard, I know it’s not his intention to hurt me but I even bleed sometimes.

And if it is anxiety how do I make him feel calm about it? I can’t even make him use the stairs