The adolescent orangutans were my favorites because of their curiosity. I was face down on the ground photographing the little bearded pigs when this guy came along. He was swinging on a vine, at first swatting at the pigs. When I got up to take a few photos, he started swinging toward me, getting closer with each swing. All of a sudden he reached out to tap me gently on the head. He did this a few times, and tapped me a few times on the chest too. Then he would sit back in the tree and sniff his finger. He seemed fascinated with my bald, sweaty head.

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