My chi, Rex is 6 months old and he has lost 2 teeth that i have found..... i have been keeping an eye on his teeth and now his top teethe where i thought there are supposed to be two have four teeth there. They look zigzagged and his bottom teeth are growing next to his baby teeth it looks like..... are the baby teeth supposed to be coming out?!?! Sorry if this seems complicated.... it is hard to explain!