How old is Cooper? He's a black and tan coonhound, right?

I think he really needs some socialization....enrolling him in a basic obedience class would be very beneficial to you both! And when you take him out for walks I'd try to keep him focused on you, and give him treats and praise when he's calm.

Sorry I'm not much help. Nebo has decided to be afraid of random people occassionally. He won't leave other dogs alone either...very very annoying! He doesn't bark and growl though, he just wants to PLAY! Rough play!