This is too weird!!!!!!!!!!!! I have a gecko and chinchilla too!!!!!! Except both of mine look older than yours. My chin begs like that too, then bites me when I go to scratch her chin.
Chinchillas do make good pets, as long as they don't have red eyes. Mine does and she's realy bad tempered, bites everything that moves. They can't see that well with the red eyes.