Hair plucking in captive bonobos (Pan paniscus)

Both wild and captive studies of grooming in non-human primates emphasize the adaptive role of this behavior. Indeed, social grooming is frequently characterized as “social glue” in the life of primates. Grooming behavior is studied to reveal dominance, kin relations, and social networks. Many captive primates, including apes, are observed to over-groom which may result […]