The current belief is that this is not a viral-induced cancer, but an infectious cancer: something that is very rare. It seems that the cancer is derived from Schwann cells and can be passed from one animal to another by biting, or sharing the same food. 

Thanks both for your reply. It will certainely be a tragedy if the poor little buggers have to spend the rest of their existance in zoos.

My question was more one about evolution. It is a creationist argument that although evolutionists  can show genetic variation within species they are unable to show a new species arising . ( I am not a creationist and have read my Dawkins).

So how do you catagories this new life form with the same DNA as the Devil but but by all other physical descriptors is not a Devil. Can I use this as an example of an evolution of a new life form?