Grandmothers Taking Care Of Their Granddaughters: Japanese Macaques

Japanese researchers observed two separate cases of grandmothers taking care of their granddaughters. The catch is, these grandmothers are free-ranging Japanese macaques (Macaca fuscata) and the researchers think that this is the first observed behavior in nonhuman primates that would support the "Grandmother Hypothesis". The Grandmother Hypothesis posits that female's post reproductive lifespan is reflected... Continue Reading →

The Kipunji Might Have Interbred With Baboons

The kipunji (Rungwecebus kipunji) was first known to science in 2003 when it was found dead in a farmer's trap near the forest of Mount Rungwe in Tanzania. Kipunji is geographically restricted to two small populations, Tanzania's Southern Highlands and Udzungwas Mountains. These endangered forest-dwelling monkeys have a very interesting history in their genetic makeup.... Continue Reading →

Contagious Yawning in Geladas

Over at Beast Ape & The Bleeding Heart Baboons blog, Beast Ape discusses about contagious yawning in geladas. This research suggests that the yawning contagion is associated with the ability to attribute mental states to others (and possibly empathy). Among non-human mammals, contagious yawning has been demonstrated in chimpanzees (Pan troglodytes), stump-tailed macaques (Macaca arctoides),... Continue Reading →

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