Hello Everyone! I have a friend without e-mail access, so I'm posting this question for her. Her 4 yr. old female ferret (Minnow) has a strange bump on her underside. It's located in the middle of her body, straight down from her armpit, on the edge of her belly and her side. I haven't seen the bump, and the only thing I can think of is a mast cell tumor. However, 2 vets have seen Minnow and don't think it's mast cell, so I thought I'd see if anyone on the list has any ideas! Apparently the bump started out fairly small and has now grown to about the size of a quarter. It is covered in light fur and may be a little discolored. It was described to me as sort of blister looking and is raised under Minnow's skin. It doesn't seem to bother her, and a biopsy came back that it contained some sort of virus. A 2 week course of Amoxicillan was given with no helpful results, which makes sense if this is a virus. Maybe the vet was just trying to prevent infection? Well, if anyone has any ideas, please let me know! I can be reached at [log in to unmask] Thanks! Anita [Posted in FML issue 2470]