As far as standing, no. The vast majority of dog paying involves teeth so there is always a chance of an accidental tear or hole, and if that happens it will bleed ALOT. But generally speaking- no. Dogs know exactly how rough they can play fight before it crosses the line. I have had multiple dogs for YEARS and only one time I got an ear tear. This is counting anywhere from 4-8 dogs running and playing together. Rayne ended up with a rip on the tip of her ear. She never quit playing and never escalted out of the play time. In fact she and KC (the one that cut Rayne's ear) were running full speed up and down the hall. There was blood everywhere and I was trying to figure out where it was coming from and they were too busy playing to notice that Mom was getting a little freaked about the amount of blood everywhere. They were having too much fun drag racing which of course jusy caused more blood splatter on the walls, floors, ceiling..... CSI would have had fun working that scene. It was only a tiny cut that eventually healed over.