My garter recently stopped eating, and I did a sorta "mini hibernation". Just put a towel over his tank for three and a half weeks, and he's eating again(still only minnows). But he hardly EVER comes out of his hiding place. except to eat, he's in there sometimes for two days(he used to be out most of the day). It's a tree/log thing that has a fault in the design where he can squeeze through a hole and go up into a branch (all of them have the fault) so I cant get him out. He is also realy jumpy.
Also he has a little white spot on the top of his head(or nose)and on two on his body. I cant tell if it's skin or what. And I can't pick him up or anything 'cause he's never out except to eat.

I'll try to get pictures next time he's out.