Professional trapper Dan Eaton starts to release a coyote after it was fitted with a GPS collar. University of Georgia biologists will track the animal for two years as part of a study of Southern coyotes. Grant Blankenship/Georgia Public Broadcasting hide caption

itoggle caption Grant Blankenship/Georgia Public Broadcasting

A blue whale is seen in Timor waters in an undated photo. The marine mammal buttresses Cope's rule, the notion that over the course of evolution, most animals tend to get bigger. Kiki Dethmers/AP hide caption

itoggle caption Kiki Dethmers/AP

A French bulldog waits to enter the ring at the Westminster Kennel Club dog show. Fulla Bull Soulja Boy got the nod as best of breed. Seth Wenig/AP hide caption

itoggle caption Seth Wenig/AP

A school of vermilion rockfish. After being depleted decades ago by overfishing, rockfish — a genus of more than 100 tasty species — have made a remarkable comeback. Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love hide caption

itoggle caption Donna Schroeder/From 'Probably More Than You Want to Know About the Fishes of the Pacific Coast'/Courtesy Milton Love

Cattle raised at the U.S. Meat Animal Research Center in Clay Center, Neb. A New York Times investigation of animal suffering at the federal research center has prompted a USDA review. Nati Harnik/AP hide caption

itoggle caption Nati Harnik/AP

If this farm animal, featured in the Sprint Super Bowl ad, could talk, it would say: "Baaaaaad news for all the people who think I'm a goat. I'm really a sheep!" via Youtube hide caption

itoggle caption via Youtube

A cow walks away from an icy pond after firefighters rescued it and one other cow that had fallen through the ice. Darin Anstine/AP hide caption

itoggle caption Darin Anstine/AP