We have a new dog, she's a lab mix (10 months old) and around 60 pounds. Everytime someone lays down, she'll walk on you, bite...she just won't calm down! She's a big girl and her teeth are big. We are trying to use the "ow" then no attention method, but she's really persistent. I think she just wants to play, but we want her to calm down in the house some. She got me tonight with one of her teeth. She won't leave our cat alone either. I've tried redirecting her and that works sometimes, but only for a second or two. She LOVES playing with the cat. We've only had her about two weeks and we are trying to establish dominance, but it's hard when a big dog goes barging out the door. I think we need a little help. She's very frustrating. She will sit for us if asked, but only for a few seconds. Can you tell her attention span is minimal at best?!