Courtney Kistler is a 28-year-old single gal who lives in New York City. She's sociable, outgoing and attractive. But that hasn't stopped Kistler's mother from worrying that her daughter, a freelance marketer, will never catch a husband--because she owns three cats. "[My parents] think it's a little weird," she says of her multiple cat ownership. In fact, Kistler's mother has been known to ask her cat-loving daughter: "What if you want to bring a guy home? What would he think?" While Kistler's last boyfriend wasn't too fond of her felines (he refused to pet them), the two men she dated...