Hi, I found a huge lump around the anus-belly area of my female dwarf hamster. It is a pretty big lump, pink in colour with a rough hard surface. It has no hair growing on it and take up a large part of the belly. She is not pregnant and the lump is too big to be some sort of clog. She is almost 3 years old now so its not worth spending money on the vet. Does anybody know what it is?

It's most likely a tumor, but that's just a guess.

There's really no way for anyone on this site to give you an accurate diagnosis. I'm only guessing tumor because hamsters are prone to them.

I would take her to the vet. You may think it's not worth it because of her age, but if she's in pain it's the right thing to do. If it is a tumor and it is causing pain then the best option, at her age, is to euthanize.

Good luck.