I first saw them in 1978. At the time, I knew a lot about chimps, because I had been studying them. I saw the bonobos at a zoo in Holland, and I thought immediately, they're totally different. (Frans de Waal)

I first saw them in 1978. At the time, I knew a lot about chimps, because I had been studying them. I saw the bonobos at a zoo in Holland, and I thought immediately, they're totally different.

Frans de Waal

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