It's worse than that. Ingrid Newkirk (PETA's batshit founder) has explicitly stated the PETA does
not advocate any animal
'right-to-life'. The ASPCA, HSUS, and PETA do little more than employ emotional blackmail to ransom millions of dollars from the public, where virtually none of that revenue is actually doled out to shelters. The policies they implore shelters to adopt succeed amazingly well in one way: shelters are the leading cause of death for healthy dogs and cats.
Please do not give any of your money to any of those organizations. If you're tempted to, at least read
this before doing so. You'll need a strong stomach to get through it, but it will reward you with the truth about how these so-called "rescue" organizations actively work against the welfare of animals. Nathan Winograd's site (above) is also a good source of information.
Having been in the treacherous trenches as a volunteer at shelters and now running a feline rescue, I've seen first-hand what monsters the ASPCA and their ilk breathe into life.