Chimpanzees in the wild reduced to 'forest ghettos'

Urban expansion and hunting have pushed chimpanzees, humanity's closest relative in the animal kingdom, into shrinking islets of wildness, top experts said Tuesday after a three-day meeting in Germany.

Social insecurity also stresses chimpanzees

An international team of researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, conducted behavioral observations and collected urine samples for cortisol analysis of male chimpanzees ...

Dust affects tooth wear and chewing efficiency in chimpanzees

In a new study, Leipzig researchers collected feces from chimpanzees living at Taï National Park, Ivory Coast, and analyzed chewing efficiency during dry and rainy periods. They found that increased dust loads during dry ...

New chimpanzee culture discovered

Chimpanzees have a more elaborate and diversified material culture than any other nonhuman primate. Their behavior varies across tropical Africa in a way that does not always correspond to ecology. For instance, only West ...

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