Male Bornean Orangutan - Big Cheeks. Image by Eric Kilby from Somerville, MA, USA, CC BY-SA 2.0, Male Bornean Orangutan - Big Cheeks. Image by Eric Kilby from Somerville, MA, USA, CC BY-SA 2.0, ...
At first glance, a video of an orangutan imitating a trainer’s grunts may not seem incredibly significant. But primate researchers say Rocky, the 11-year-old orangutan in the video, could ...
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