IamA leader of an animal rescue that works with a high kill shelter that kills over 30,000 animals a year.
The shelter saves about 30-40% of animals that come in, and kills the remaining 30,000 annually. I have seen the worst and the best in both people and dogs.
My group's lofty goal is to reduce the number killed to a reasonable amount.
Proof sent to mods.
Edit: To clarify, I don't work at the shelter. I pull animals from the shelter into my group (and thus "work" closely with them).