Our female Veiled Chameleon has an unidentified bump on her hind-quarters near where the base of the tail and leg meet. Anyone have any ideas what this might be? She has had it now for at least 6 months, and it does vary a bit in size from time to time. It dosen't seem to bother her, but I am thinking that it probably shouldn't be there.......any help is appreciated. See attached pictures.