Help please! My black female cat Mina has a huge thing on her little leg. I only noticed it when roomie inspected her and saw a huge mass on her back left leg. He thinks she was playing rough with her bf cat and might have got a little cut and got infected from the cat litter. He took her to the vet and got Antibiotics to see if that could rule out a tumor. Can we reach this goal to help out Mina?!