In a lab tucked away on the Yale University campus, researchers are quietly observing a pair of marmoset monkeys. The scientists have been training these monkeys for months in the art of cooperation.

A researcher has found that the rapid detection of snakes by monkeys is because of the presence of snake scales as a visual cue. His findings highlight an evolutionary adaptation of primates to ...

VRINDAVAN, India – Krishna, a skinny 12-year-old, waits near a Hindu temple packed with pilgrims. He hears a yell – that's his cue. He zigzags between motorbikes and honking tuk-tuks, elbows his way ...

The “big truck, small man” phenomenon is also seen in the animal kingdom. The loudest howler monkeys were found to have the smallest packages. Hyoid bone size, which is responsible for vocalizations, ...