I'm actually beginning to experience the same problem with my roo. I hate to do something with him because he is a beautiful lavender orpington, but I will not tolerate his behavior, especially with my two young children in the yard. He started with the dog about 4 weeks ago, then turned on my husband, then my 3 yr old daughter. And I too would give him a boot, tell my daughter to kick him away, I even went as far as chasing around one day trying to catch him so I could confine him to the coop while the hens free ranged. Well I never got a hold of him, he ended up running into the woods far enough where I thought he had gotten lost, but returned later that day. With all the rain we've been having they've been in their coop for the past couple of days. Let them out today finally and he puffed up and attempted to go after my daughter again. I'm really thinking of getting rid of him, my husband would love to cook him I'm sure. I wouldn't have it in me to cull him myself so maybe I can find someone in my area to do it for me. My problem is catching him! Ohhh where to begin with that!