i have a male glider hes a caramel he was a bit under weight when i got him i was told he wasnt neutuered a few months have passed hes on a great diet but his bald spot is bascally all grown back im very confused im gonna be taking to the vet soon before or after christmas im very confused on why the hair is all back im not sue if he did something to himself or what, does anyone have an explanation for me???