Bite his tongue while chewing on a bone and then cry?? It took us a few days to figure out why he would suddenly yelp when chewing his bone, but we are pretty sure that he sometimes bites his tongue just like we humans do. Just found it strange! =)
Nope, but I have often wondered how they can play with other dogs so hard and do all that biting and banging around and not bite their tongue. Same with chewing a bone or something they are tearing apart.