Chimpanzees are losing their homes, but it’s not too late. World chimpanzee day shows us why they matter and how we can help.

Chimpanzees at a sanctuary in Zambia have been found to have developed the “seemingly pointless” behavior of dangling blades ...

Human faces are famously flatter than those of other primates. Neanderthals, by contrast, had prominent, projecting midfaces ...

Chimpanzees adopt pointless fads, just like humans, researchers have found. The animals were seen wearing grass and sticks in ...

Human testicles are much smaller, in proportion, to some of our primate cousins. Evolution can tell us why. But the size of ...

Here’s what muscle fibres, motor control, and a bit of adrenaline say about our place in the strength hierarchy ...

A chimpanzee named Juma turned out to be quite the trendsetter. He picked up a blade of grass and stuck it in his ear, a ...

It may seem unusual to think of chimpanzees as doctors, but they more closely resemble human healers than you may expect.

But, like chimps, humans and gorillas, these similar monkeys have vastly dissimilar testicles. Colobus testicles weigh just 3 grams. The testicles of the macaques, in contrast, are a whopping 48 ...