My 2 are the same way. When they play it looks like they're going at each others throats! Well, it looks like Lilly is doing that more so than Bruin. She's the bossy one. She'll take toys away from Bruin, but if Bruin even thinks of going to get them from her, watch out. It does get a little out of control though. Sometimes, I can't take it and yell no. I'm not really sure if that kind of play is ok to tolerate. I suppose to a degree. anyone else?