Aggressive Maneuvers

Although for the most part calm (well more like constantly sleeping), Charlie has for the past two weeks been known for routine moments of aggression. Like clockwork, every day from about 4pm till 6pm and then again from 8pm till 10pm (predictably the exact moment every evening that we fall onto the couch in exhaustion and hope for a moment of respite) he runs the gamut of "bad" behavior: nipping, chewing in furniture, barking, tipping over his water bowl and any other form of mayhem he can think of. The most recent and surprising aggression of choice: the leg-hump.

Contrary to popular opinion, the leg hump has less to do with sexual frustration and more to do with asserting dominance (especially in neutered dogs). As explained in this article,  mounting is a maneuver used to enforce dominance over other dogs and in our case, human beings. What does it mean when he ignores our leg for greener pastures in the form of his ever-submissive blanket?  We are hoping the trainer will have some insight, four days and counting till the first session.