Ellen Rogers (born June 29, 1970 in Burbank, California) is an American veterinarian and TV host who was one of the scientists (a vet) that worked in the series. She was the rhinoceros expert in the episode "Elephant vs. white Rhino" the hippopotamus expert in the episode "Hippopotamus vs Bull Shark", and the puma expert in the episode "Wolf vs Cougar". Her mother was a veterinarian, her father was a zookeeper and her older sister Debbie Jean is an actress