Our girl, Boba, is a year and four months old. She had a mammary tumor about four or five months ago, which she got surgery to remove.
Tonight, when we were playing with Boba, we noticed a small lump a little under her arm. It is a bit movable and is sort of squishy like skin, but not hard. We are very worried that this could be another tumor, since it is common for the tumor to come back. However, my mom thinks that it feels different than it did when it was a tumor, but I don't remember.
Boba has gained a ton of wait since she got surgery, so we think it may be some sort of detached lump of skin or something. Is this common in rats? We think it may also be an abscess.
Please tell me what you think. Thanks!