! What kind of internal problems?
Also, I'm not sure he's a boy. Petco did not sex him that I know of. Could he be a female? Is that still abnormal in females?
What should I do? Increase his food size? Petco also told me he was eating fuzzy mice once a week. I've been doing that, but he's in blue so I haven't wanted to try feeding him yet this week. Should I try and see if he'll take it?