You could try taking the rat back to the pet store tomorrow and see if they'll take it back for store credit. Some will and some won't. OR...you could just go and buy a small rat cage to keep it in until you can feed it off. That's what I do.

Here's a link with great info about what to feed 'em:

http://www.ball-pythons.net/forums/s...ad.php?t=28391

If you feed a ball-python a larger prey item, it may very well stop eating for an indefinite amount of time....simply because it takes them awhile to "get hungry" again.