Monty currently has a button tumour on his leg. It started off as a small, round hard lump and the vet confirmed what it was. In the 3 weeks since this happened, it has doubled in size and looks and feels like a hard scab. I'm having to keep him in his 4 legged Equafleece a lot of the time to stop him biting at it. Vet said it could take 6-8 weeks for it to disappear.....