Gaylene Thomas, a wildlife care manager at the San Diego Zoo, oversees two teams that care for a variety of species, ...

Cassy the mountain lion, named for the Cascade Mountains where she was found orphaned as a cub in 2007, died at her Kansas ...

Visitors can get closer to wildlife than ever, but the San Diego Zoo Wildlife Alliance's impact goes far beyond the savanna.

Cassy the mountain lion in her enclosure at the Topeka Zoo ... years and males have one of 13.5 years, according to the San Diego Zoo. “Caring for geriatric animals is a responsibility we ...