It went from one of the worst zoos in America to a beloved menagerie filled with disabled and elderly native species. Now it ...

DENVER — A fancy-looking French angelfish that was found one day with a funny float has its buoyancy back after taking some time from its tropical trappings to get a CT scan at the Denver Zoo. A zoo ...

From a sea lion's wave to an elephant's squats, talent is always on display at the Denver Zoo Conservation Alliance. And while it often appears to be pure entertainment, there's a deeper, more ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. During the Great ...

On an early morning in June, wearing purple latex gloves, Chandlar Carlile stood with a sharpened knife slicing through papaya, honeydew, lettuce and an assortment of other produce inside a shiny ...

The way lions, tigers, bears and eagles hunt, kill and ultimately eat their prey can be a grisly, brutal business that some humans prefer not to think about. When these animals are kept captive in ...