just adding my two cents, in the hopes that other people will read this. also falling asleep, so kind of quit. never fridge/freeze with reptiles. please pass at least this much on to anyone else you ever hear suggesting that. okay with amphibians so long as you dope them up with some mouth-numb-er (i think ones called anbesol) first, and wait quite some time in between transition. the best way is to NOT do it yourself, but to have a vet do it. it is so cheap, many vets will do it for free. if you must (like, if you just hit a snake fatally on the road or something), do NOT simply decapitate/break the neck. as ectotherms/cold-blooded, whatever term you use, their brains can last for up to 20 minutes independently of anything else (meaning, decapitated). so, instead, you must 'pith' them. this means taking a metal rod/spike about the estimated size of their braincase, and shoving it from the base of the cranium into the brain case (from behind), and moving it around to mush up the brain. this renders the animal braindead and it will not feel pain after that (if you hit the right spot), though the brain stem might be lower and still working. alternatively, you can just do the 'smash with a big rock' thing. though it sounds unsavory, if you are careful to smash the cranium, it has the same effect. if you have a long-suffering animal (one that doesn't need to be put down immediately), you can make your own carbon dioxide chamber with a sealable plastic bag (like you buy crickets in, for example). it will eventually use up all the oxygen on its own, and it purportedly 'feels like going to sleep.'
personally, i would never use any of these methods unless an animal was clearly fatally injured/sick, i was absolutely sure of the situation, and there was no possibility of going to a vet.
hope that helps. i am just sick to death of hearing about people putitng their reptiles in the freezer.
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marla
currently: 0.0.9 catfish, 0.1 ferrets, 0.0.14 hermit crabs (of unknown species), 2.8.4 leopard geckoes, 0.0.6 korean fire-bellied toads, 0.0.6 strawberry hermit crabs, and 0.2.0 sugar gliders