Not only is PETA not a law enforcement agency, the organization spreads some pretty serious misinformation about exotics... Not just the fear-mongering kind (which it does) but general care info as well. The official site has 'care pages' detailing how to properly care for companion animals, and let's just say the page for reptile care is sorely lacking. Here's the link just for giggles: http://www.peta.org/living/companion...ring-reptiles/
(I'm vegan, and as much as I dislike PETA, they have about the biggest repertoire of vegan recipes around, so I've spent quite a bit of time clicking around their site. I also think it's good to have a good idea of what people who so violently oppose pet ownership are actually saying and how they try to justify their points)
Unless a situation is so bad that every animal involved would be better off dead, you don't even want to THINK of getting PETA involved. Their field teams are generally made up of individuals with little to no official training (such as an animal control officer might have), no knowledge of what is and is not legal to do for an animal without the owner's permission, and an intense devotion to the idea that animals should not be kept as pets period. The end result of getting them involved would have probably been a dead burm and a psychopath who still felt justified in trapping and killing their neighbors' pets.
It's not that we don't understand the seriousness of the crimes, it's that no one involved had the resources or knowhow to get this person's location, and if they did, local law enforcement should have been contacted, not some organization that thinks having pets is equivalent to owning slaves. I don't think you have a grasp of how toxic these organizations are and how little they really do to advance animal welfare.
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You wrote this while I was writing my postSorry.