We have a 10 week old pup who had very tall upright ears even before we got her at 8 weeks. She absolutely loves our older dog (a 4 y/o shepherd/heeler rescue) and wants to play with him all the time. They wrestle constantly and although he is very patient and gentle with her, I am worried that her ears might be getting boxed a bit too much. She is starting to get a bit of a flop on one ear. I know it happens as they grow, but should I limit the play to protect her ears?