Thank you for all of the feedback. He certainly is a special boy. Here is a picture of his face (I don't believe his face photographs well) and of his teeth which are bigger than I have ever seen on a domestic cat.
I would appreciate insight into the breed of my six year old cat. He was found in the woods in Pennsylvania when he was about three months old. He has short grey hair with tiger strips that have faded significantly with age. He has a very tall and muscular build standing at about 2 ft tall and...