This makes me think of the cat in The Nightmare before Christmas, and the cat in Coraline. Also, I recently encountered a stray cat like this, black and emaciated. I fed him a little. He was affectionate and appreciative, but weak. He went off and I never saw him again. I don't think he lived much longer, but I'll never forget him.
If you haven't seen either of the movies I listed, you should. They are both stop motion by director Henry Selick, and are very artistic.
he sure is! would be fun to create stories with him!
also would be so cool to trade for your drawing of him, or even buy him...whichever works best for you