Animal Care & Control of New York City's pet-fostering program. The shelter uses this option when it's running out of room or when young animals need special care until they're of adoptable age. Foster parents house the darlings in their homes for one to six weeks. The neediest pets tend to be abandoned puppies and mother cats and their kittens (surprise, surprise). Yes, the whole idea is insanely cute. But it's much more: These animals might be put to sleep if someone doesn't take care of them. (Sorry for the downer.) So here's your chance to be a hero. Should you find you're finally ready to take the pet-ernity plunge, well, welcome to the club. Animal Care & Control of New York City (212-788-4000) or http://www.nycacc.org).