Behind the scenes at a Chicago zoo, chimpanzees who spent years entertaining humans are learning to befriend their own kind.

Animal advocates have been fighting for years to get the animals moved. They have not been used as test subjects since 2015, ...

The National Institutes of Health decided to relocate nearly two dozen retired research chimpanzees from a facility in New ...

The animals have not been used as test subjects since 2015, when the NIH retired chimpanzees from invasive research.

New Mexico was once home to a large colony of captive-bred chimpanzees, with the animals first brought to the state for space travel testing. Later, the colony was acquired by the Coulston ...

"There are many details to be determined in the weeks to come, but for now, we celebrate this wonderful news for the APF chimps," Smith said.New Mexico was once home to a large colony of captive ...