I have a tiger salamander that is very sick and the vet has no idea what it is. She has taken 2 different biopsies and it just shows its "very cellular" we have treaded it with 3 different kinds of meds...2 topical and 1 oral. Nothen has seem to cure mu little guy. She says its either a tumor or cancer. It has now spread to his arm and now to his back knee. We are at the point where if iy doesnt get better.....god i hate thinking if it....but put him down. PLEASE HELP