my German Shorthair did it every time went we out. my truck still has blod splatter on the roof liner. at home i had to repaint the walls because of it. i know the best solution...VASELINE! I used to put a bunch of it in a baggy and leave it in my hunting jacket. when your dog cuts the ear just take a big pinch of it and smear it in the cut and it will stop right then. believe me.