I wonder if it's possible for this to happen to snakes that eat live?
I've had mine for about 6 months and haven't been able to switch him yet, but he stopped taking his weekly mice about 4 weeks ago. He'll follow the mouse around for a while, but he won't strike at it. I know you can't leave them alone with live food, so I just end up taking it out after about 30 minutes.
I may take him to the vet if he refuses food again.