This is my first ball python. Someone bought it at a reptile show a few weeks ago and couldn't keep it (dumb, I know) and now I inherited it.

It seems way too thin, skin seems really loose and wrinkly, skin gets both vertical and horizontal folds when the snake moves. I can try to take some pictures you guys think that would help.

It ate one hopper mouse nine days ago and refused the mouse when I tried to feed it yesterday (I got the snake Monday).

What do I do?