The Saint Louis Zoo announced Thursday that its medical staff “humanely euthanized” an elderly chimp due to worsening health ...

Retired research chimps from New Mexico are moving to Chimp Haven, the world's largest chimpanzee sanctuary, in Louisiana. The National Institutes of Health confirmed to the Associated Press on ...

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

NIH representatives confirmed in an email that the transfer of the 23 chimps from the Alamogordo Primate Facility at Holloman Air Force Base in southern New Mexico will happen in the coming months.

"Given this uncertainty, NIH has determined that the best course of action for the welfare of all these chimpanzees is to relocate them to the federal sanctuary at Chimp Haven."Agency spokesperson ...

But as a study published on November 8th in the journal, iScience, details, even chimps appear susceptible to the “audience effect” in certain social situations. [Related: Chimp conversations ...