There are fewer than 250,000 chimpanzees left. Scientists make breakthrough discovery after studying chimpanzees: 'Important ...

The chimpanzee approaches the camera and appears to recognize that it is different from her environment, video footage shows. She picks up a long stick, uses it to probe the camera and then appears to ...

The female endangered chimpanzee used a stick to investigate a trail camera in a Gabon national park. Gabon ANPN/Panthera/Gaboma Multimedia and Production In 2015, a photograph of a lone male lion ...