Our new baby Gidget is almost 11 wks. old and both of her ears stood up from the first time we saw her at 8 wks. At times, I have seen one ear flopped over but then other times, they both stand up. This morning, her left ear is flopped over and I wonder why this happens...has anyone else had this happen? I wondered if the play time with her big sister has been too rough as they bite on each others ears. Any comments on this?