I play rough with my three. Very rough with Milo, he gets slid along the floor, bashed into walls, slapped, pinned to the floor, punched and bitten. He gives as good as he gets or worse! He isn't scared, neither of us get hurt (most the time ) and we both enjoy it. I'm not so rough with the pups but we're working up to it, if I start a play fight with Milo the pups will come and join in, they've never been forced to play fight.

I think it's benefitted Trinny no end. She was very nervous and acted like we were going to beat her all the time when we first got her. Play fighting has built up her confidence and showed her that a raised hand is not something to be feared. We just have to stop her being scared of food bowls now!

Does it heck lead to aggression. Granted some dogs might not like it and of course if they are scared will be aggressive but that doesn't mean play fighting will lead to an aggressive dog.