By Sue Danielson Photo: Des Moines Blank Park Zoo (Des Moines, IA) -- The Des Moines Blank Park Zoo is welcoming two red river hogs. The animals are native to Africa, are rust-colored with a white stripe down the back. Zookeepers say the hogs most favorite past-time is to wallow in the mud to stay cool. It's hope the pair, named Shallot and Truffle will breed and have piglets. Zookeepers say Shallot, the male, is three years-old, and has warts on his muzzle. Truffle, the 10 year-old female, does not. Details about red river hogs: Size: 40-50 inches long