It’s not unusual for chimpanzees to fight. Chimpanzee society is naturally aggressive and even violent. However, visitors at ...

In a recent study published in PLOS ONE, researchers from Durham University investigated the behavioral contagion of grooming and play among sanctuary-living chimpanzees in Zambia. The study ...

According to Live Science, social proximity was not the determining factor in which chimpanzee followed another in urination, unlike grooming and yawning. "This is the first study to investigate ...

Save the Chimps is an organization unlike any other. The world’s largest privately funded chimpanzee sanctuary, it’s home to ...

Social closeness, measured by time in close proximity and grooming with another chimpanzee, had no effect on the peeing phenomenon — unlike with social yawning, which increases in socially ...

as in the case of grooming and yawning. Instead, the researchers found that rank played a role. Low-ranking individuals were more likely than others to start peeing if a chimp nearby did.

Our research suggests that this phenomenon may have deep evolutionary roots.” Onishi, et al decided to study the phenomenon after noticing that many chimps in the sanctuary seemed to synchronize when ...

long scratch that invites grooming; and a two-footed stomp that means “Stop that!” No other chimpanzees are known to use the hand-eye gesture like Lindsay and Beryl do. It’s their own ...