A groundbreaking study reveals that orangutans living in zoos engage in more frequent and complex object exploration than ...

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

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

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

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

Imagine being trapped in a silent, empty room with nothing to do, day after day. For many animals in captivity, this is not ...