I forgot to mention that Boris' teacher has a bulldog. She understands his antics and has made the extra effort to bring additional reading material/homework for me.
From reading your stories I'm learning that he's getting bored waiting in class (hence the jumping and biting of his leash) and I'm going to need to keep his mind busy. I may also need to be more animated to keep his attention on me than Lenny the Bull Mastif who he just wants to play with.
Thanks again!
Boris