New York City’s Secret Weapon in the War on Rats: Katie the Dog NYT | Top Stories By: Andy Newman 23 December 2024 at 16:00 She roams Brooklyn’s parks and streets in search of prey. It’s not hard to find. © Sara Konradi for The New York TimesKatie, a 4-year-old dog who lives in Brooklyn, comes to life when she’s killing rats, said her owner, Sarah Darby.