Although he looks all black, Caspers fur is unusual a its white at the roots. You can only see this if you brush his fur back. He was wearing a silver collar with ID tag which was loose as it was irritating his skin. It may have fallen off, and if it has - he will have a circle of skin around his neck where you can see his white/grey fur. He has 1 front tooth missing.

www.nationalpetregister.org