Male gorilla Sango sits in his enclosure during the presentation of a resea...

Maximilian Schall, project manager and doctoral student at the Hasso Plattn...

Male gorilla Sango sits in his enclosure during the presentation of a resea...

Male gorilla Sango moves around his enclosure while being observed by a cam...

Male gorilla Sango (r) moves around his enclosure during the presentation o...

Male gorilla Sango sits in his enclosure during the presentation of a resea...

Gorillas move around their enclosure and are observed by a camera (in the f...

Male gorilla Sango sits in his enclosure during the presentation of a resea...

Gorillas sit in their enclosure during the presentation of a research proje...