Sorry, but I can't see that these things are equivalent. Guns don't have a mind of their own, with the ability to slip out of the house and find their own prey. Just sayin...
Well, most snakes have very little mind at all. Most people who keep snakes, like me, are smart enough to know a 6 foot anaconda can rapidly become a 12 or 15 foot one. Unless you have a leather factory that is a bad investment. Besides they are ugly and have bad tempers.