My Mouse has lumps all over its body

Question
I have just noticed that my mouse has lumps all over its body, i know it sounds silly but it looks like it has taken steroids and is really muscular as there lumps over its shoulders and around its neck, they are even on both sides. It is a hairless mouse and i have 2 the other one is fine. It is still eating and drinking ok and doesn't seem to be in any discomfort. Can you please advise if you can think what could be wrong with her as i would hate to think she is suffering in anyway.

Answer
Hi,

If the lumps do not appear to be 'on' the skin, ie. there's no wounds or bite-marks, they are most likely caused by a pretty aggressive tumour. Unfortunately the only thing to do in that case is euthanasia when the lumps get big enough to cause her discomfort. However I suggest a quick visit to the vet for a closer look. Good luck!