Chimpanzees and bonobos have mainly type A blood, while orangutans have A, B, AB, and O. Gorillas, however, appear to have blood types that do not fit the ABO system. In all great apes, red blood ...

Every year on July 14, people around the world celebrate World Chimpanzee Day. This special day commemorates the anniversary of Dr. Jane Goodall's first visit to study wild chimpanzees in Tanzania in ...

Humans can contract toxoplasmosis, too – those who are infected suffer from concentration problems and slow reaction times.

Chimpanzees can change their minds when the facts no longer support their previous beliefs – a rational level of thinking that was once considered uniquely human. In a series of experiments designed ...