These dogs are making conditions ruff out there for New York City rats. The Ryder’s Alley Trencher-fed Society, more commonly known as R.A.T.S., is a group of vigilante pups and their devoted owners ...

When you play the Game of Thrones, you either win or you die—and the same idea pretty much applies for crowning the queen of a naked mole-rat colony. For months, the hairless rodents at Smithsonian ...

After months of anticipation, the naked mole-rat colony at the Small Mammal House at the Smithsonian’s National Zoo finally has a queen—the only breeding female in a colony. A female gave birth to ...

Rats were born and raised at the University of Toronto at Mississauga from a stock originally from Charles River Farms (St. Constant, Quebec, Canada). Animals were maintained under controlled lighting ...