My 10 week old English Bulldog puppy "Gus" has been with us since he was 7 weeks old, when he first came home, the first week he tried to act dominant with us, sometimes growling or nipping when he didnt want us to pick him up - we corrected this by immediately rolling him onto his back and gently but firmly pinning him on the side of his neck with our fingers like the mothers "bite" (such as Cesar Milan does) this worked for me, my husband, and our 7 year old daughter, and he stopped this behavior with us completely - except for when my other daughter, my 6 year old plays with him, he will act extremely bratty with her and very dominant and if he steals her toy and she tries to take it away by saying "NO Gus" and attempting to take back the toy, he growls/bites her, yesterday he tore her skin and made her bleed. How do I teach him that this is not acceptable?? when he bites her I rush over to them right away and use a firm voice "NO bad!" and I also tried running over and immediately pinning him down while my daughter is right there, and he becomes very submissive to ME, but he seems to know that he can push her around because she is more soft spoken and smaller then any of us. If he keeps up this dominance as he grows larger, I do not know what to do. Any suggestions would be great. thank you.