Aggression (the good, the bad & the ugly)
My puppy is 9 weeks, and I got him when he was 7 weeks. So he's still super young. He is also my very first dog that I'm training. When I tell him no, he seems to understand and stop what he's doing that's naughty. But other times he sasses me, as in he'll bark at me. He does that when he's...