Four orangutans had to be tranquilized and moved back into their enclosure after a malfunctioning door allowed them to escape ...

An orangutan was able to briefly escape its primary enclosure after a "malfunction" at the Denver Zoo Conservation.

Since 1896, the Denver Zoo has been one of the premier institutions in Colorado. The very first animal to call the zoo home was an orphaned black bear named Billy, a gift to the mayor of Denver.

The paternity of a baby orangutan born at the Denver Zoo was a mystery to staff – so they went to the paternity test expert, Maury Povich. Siska the orangutan is four months old, but it was ...

In 2012, Mimi, the Denver Zoo's beloved elderly elephant, passed away at the age of 53. After that loss, the zoo decided to take another approach to elephants — a very hands-on approach ...

DENVER (KDVR) — One of the world’s rarest equids was born at the Denver Zoo Conservation Alliance this week, marking a critical step for the future of the Critically Endangered species.

The Denver Zoo wants help naming a new addition to the Zoo's residents. The Zoo welcomed a baby Linne’s two-toed sloth to its Tropical Discovery habitat on Thursday, Jan. 26 — born to mom ...

The question gripped the Denver Zoo for months: Who was the father of the baby orangutan Siska? Was it 30-year-old Berani or 16-year-old Jaya? When the paternity results finally came in ...

The Denver Zoo’s latest feline resident has been waiting in the wings for more than a year — first smuggled through the Denver International Airport on a commercial flight, then held as evidence in a ...

Friends that are family. There are so many types of relationships at the Denver Zoo, and so much cuteness to celebrate on Valentine's Day. The herd of Cape buffalo, for instance, celebrated ...