Cats don't always land on their feet. Last year, 7,000 unwanted felines were euthanized in county shelters already brimming with little victims of the detestable economy. An estimated 1 million homeless and feral cats roam the streets of Los Angeles. You might leave kibble for a feral cat colony in a nearby parking lot; perhaps you found a mewing litter in your backyard and thought it best to call Animal Control. But there's only one way to improve the cat karma of your neighborhood: Trap-Neuter-Return (TNR). Nonprofit Fixnation is on a mission — to bring about the Day of No More Homeless Cats in Los Angeles. Sound impossible? Since opening its doors in 2007, Fixnation has fixed more than 70,000 felines; it operates the only full-time, free spay/neuter cat clinic in L.A. In addition to surgery, cats get pain and flea meds, rabies and distemper shots, antibiotics and deworming. (These services also are provided for tame cats at a nominal cost.) It's not hard to be a hero — Fixnation can teach you the ways (and loan you the gear) of a feral cat trapper. 7680 Clybourn Ave., Sun Valley. (818) 524-2287, fixnation.org.