I had to share it. The chimpanzee’s name is Mama. The context for what you see in the video is this: “Mama's memory of, and love for, Jan van Hooff, renowned biologist and the founder of the zoo's chimpanzee colony — whom she had known since 1972 but not recently seen — brought tears to my eyes.

Mama's whole being lights up in recognition of a dear friend. Through a constellation of factors — Mama's facial expression and gaze, her vocalizations, her arm embrace of van Hooff and her patting behavior of him — we witness her display of an emotion the world of science for too long was reluctant to assign to animals: love.”

-- Modified on 11/1/2017 11:36:13 PM

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