Mercutio said:
I don't actually think they do need to be fed live food. I know people who buy frozen mice to thaw for their snakes...
To me, this is like buying a painting because it matches the sofa.
Why would someone want a snake, if they do not want something that behaves as snakes behave? To me, such a person wants a snake-substitute, and not a snake at all.
No one who truly cares about their snake will feed it live. It's simply a bad thing to do, for several reasons.
1) It is healthier for the snake. Mice, rats, rabbits, birds are all capable of carrying parasites which can be transmitted to the snake. External as well as internal. Even if you have a good source for clean animals, there is always a significant chance of the animals aquiring parasites at some point. Particularly with mice and birds (live feeder birds are almost guaranteed to have mites). Freezing the animal kills any parasites that it might be carrying. Parasites for any reptile are a rather more serious issue than they are for dogs and cats; and treating them is never easy, and can result in creating further health issues for the snake.
2) Mice and rats have been known to injure, and even kill, snakes. I know, personally, one person who had her snake blinded by a mouse; and have heard plenty more about rats outright killing snakes. I suggest bringing the subject up at your local Herp society, and you'll get plenty of similar info.
3) It promotes aggressive behaviour in the snake. Snakes fed live animals tend to be more aggressive and harder to handle than snakes that are fed only Frozen/Thawed. This may not be an issue for you if you're only keeping the small colubrids -- corns, milksnakes, etc. -- but with boas and pythons, most of which get to at least 6 feet and are much bigger and stronger than colubrids of similar length, this can be a problem once the snake reaches it's adult size.
On top of that, though I doubt anyone sadistic enough to consider that sort of thing entertainment will care, it's very inhumane for the food animals. It's a very slow, painful death. Yes, it's "more natural", but so are a hell of a lot of other things that we don't do because they're simply unecessarily cruel.