This black bear was spotted atop a tree in Tampa, Fla., on May 17, 2013. The bear population has been on the rise, so state wildlife officials are calling for a bear hunting season. Skip O'Rourke /MCT /Landov hide caption

itoggle caption Skip O'Rourke /MCT /Landov

Fernandina's Flicker (Colaptes fernandinae), a woodpecker found only in Cuba. Pete Oxford/Minden Pictures/Corbis hide caption

itoggle caption Pete Oxford/Minden Pictures/Corbis

The European eagle owl, like this one from the Mulhouse Zoo in eastern France, is one of the largest owl species, with a wingspan of about 6 feet. Sebastien Bozon/AFP/Getty Images hide caption

itoggle caption Sebastien Bozon/AFP/Getty Images

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