He has some bare spots on his tummy, but he doesn't seem to have a reason for it---no fleas, surgical scars, etc. When he was rolling around, I saw the bareness and 'assumed' female.

Smokey just left to go to a possible new home on a trial basis. Hopefully the cat at the new home will accept him. Smokey wants to be friends with every other cat, so it all hinges on the resident cat.