Got him to agree to letting me keep something in my bedroom of the apartment, and if it has no offensive odor after a period of time that it can be moved to the main living area. That opens up quite a bit more possibilities. Still no reptiles - or at least no snakes. I wouldn't mind doing something that would thrive in a nicely built, planted naturalistic type vivarium, so that it could almost be seen as a piece of art in the living room. Might make it easier for him to accept it being there.