The National Zoo generally is a family-friendly place, but at the Woo at the Zoo event Friday night, it was all about wild animal sexual behavior. “We like to say we’re a free zoo where animals can ...

ZooMontana will host "Woo at the Zoo" Thursday. This adult-only event will provide guests the opportunity to learn more about the wild languages of love, animal style. Couples will engage in a ...

Hey Ladies: Walrus Busts Out Attention-Grabbing Mating Calls at Washington Zoo A male walrus at a zoo in Tacoma, Washington, delighted his keepers by illustrating the species’ entertaining mating ...

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

While the rest of Washington seemingly was focused on the upcoming presidential inauguration, the capital's famous giant pandas were apparently attempting a transition of their own. The National Zoo ...

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