HELP!! ball has a lump

[Vypyrz]

Hi, John, and welcome to the forums!

A little lump could be any number of things, from a harmless birth defect to a tumor or abscess. Does it seem to bother her when you touch it? Can you get in contact with her previous owners and ask if they've noticed it before? If she's had it for a long time and it hasn't caused any problems it's most likely not a problem. On the other hand, a trip to the vet is always the safest course of action.

to BP.net

I agree with C4H. It could also be anything from a tick to an old rat bite. Without pics, it's hard to say. But, when in doubt, check with a vet. Since you just got her, if you decide to take her to a vet, I would suggest taking a stool sample in also to make sure she doesn't have any internal parasites...