Friendly social behaviors are contagious for chimpanzees (IMAGE)

PLOS

Friendly social behaviors are contagious for chimpanzees

Caption

Don and Duncan playing (Chimfunshi Wildlife Orphanage, Group 2).

Credit

Dr. Jake Brooker, CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/)

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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