Scientists working in China — where else? — have constructed embryos that are part human and part monkey.

A close encounter with monkeys in Colombia's forests as a biology student, eventually led biological anthropologist Laura Abondano to study woolly monkeys, which have some behaviors completely ...

In a controversial new study, Salk Institute researchers in California have have grown human stem cells within a macaque monkey embryo.

Scientists injected dozens of human stem cells into developing monkey embryos, and the resulting hybrids survived for up to 20 days in lab dishes.

The world's largest species of monkey "chooses" mates with genes that are different from their own to guarantee healthy and strong offspring, according to a new research study.

The spider monkey’s tail is prehensile, which means “capable of grasping.” It is generally longer than the animal’s body and ...