Big events like A La Carte at the Zoo and Wild Lights bring lots of activity to the zoo, so staff take animal needs into consideration when planning.

A new study comparing wild and zoo-housed Sumatran orangutans reveals that life in a zoo significantly alters how orangutans ...

A new study reveals that Sumatran orangutans in zoos explore more frequently and in more complex ways than wild orangutans, ...

More curious: Orangutans in zoos explore more frequently and in more varied ways than those in the wild, including greater ...

Tilly, a river otter, came to the Oregon Zoo in 2009 as an injured and orphaned pup. She birthed four pups while at the zoo.

while zoo-housed orangutans engaged with a wider variety of enrichment items such as plastic toys, puzzles, and stackable objects designed to encourage manipulation and cognitive engagement.

The Pittsburgh Zoo and PPG Aquarium will have a reduced admission day for Somerset County residents to enjoy the parks.

Tilly, a 16-year-old river otter at the Oregon Zoo known for being "Mom of the Year" and a cameo on the NBC show "30 Rock," died April 30.

A new study comparing wild and zoo-housed Sumatran orangutans reveals that life in a zoo significantly alters how orangutans interact with their ...