I don't really believe them anymore. Someone saved a squirrel, so it brought a cookie. Someone saved an elephant 355.76 years ago and now it swam the Pacific ocean to save them from heat stroke in death valley.
I saved a bird from death in my neighbors yard. It was stuck in a pipe in the ground and couldn't get out. I saved another bird from being stuck in the garage attic. I never saw those ungrateful bastards again.