Luke Ellsbury and his 16-year-old daughter had chased the lion for miles through a foot of snow in some of northwest Wyoming’s harshest country. Their bluetick-English coonhounds finally treed the cat ...

Here's what happens: The plankton eat algae that contains the acid, and then the fish eat the plankton, and the sea lions eat the fish — one thing surviving off another, passing on the toxic acid.

Two male lions became infamous for terrorizing and eating humans in 1898 during the construction of a railway bridge over the Tsavo River in Kenya. Now, an innovative genetic analysis of hairs trapped ...

CHICAGO (CBS) -- When the Lions of Tsavo first arrived at the Field Museum of Natural History 100 years ago, they had been made into rugs. But taxidermists transformed them into the lifelike display ...