I thought perhaps I would stand up for your husband, since pretty much everyone who has answered your post loves snakes and can't comprehend why people don't want snakes in their house. I do not like snakes. If my boyfriend brought one home, knowing full well how I feel I would be offended. I could not live comfortably knowing there was a snake nearby that might get out of its cage and pop up out of nowhere when I least expect it. The thought makes me shiver. I think it would be disrespectful of Jason to put me in that position.
I understand also what it's like to want something, and its worth working at, but I don't think when you are commited to someone that you should make big decisions like that without consent.