Bonobos (Pan paniscus). A four year old male uses the foot of an 18 month old female to masturbate. Sexual activity plays a major role in bonobo society, sometimes aiding in conflict resolution. San Diego Zoo.

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TOP21980670

Source:

達志影像

Authorization Type:

RM

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須由TPG 完整授權

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N/A

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No

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No

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