I have a similar issue, my ball python (about 8 yrs old) won't eat, can't? He hasn't eaten in about a month and a half, he didn't eat, tried the next week he had a bad experience with a rat that bit his face pretty good, wouldn't eat it, tried the next week with a new one, nothing, gave it two weeks, nothing, so switched back to try a mouse, been a few weeks, still nothing. He strikes and shows interest, but won't (can't?) hold on and kill the lil bastard and eat it. I've checked his mouth, apart from a missing front tooth, it seems normal, bites on face are much better, but he's still not eating.