Lab monkeys initially thought to be carrying a range of diseases have escaped from a truck in Mississippi following a crash — prompting law enforcement officers to kill a number of the animals.

A quiet moment turned frightening in Delhi’s Batra Colony when an elderly woman was suddenly attacked by a monkey while sitting outside her home. The disturbing incident, captured on video, has gone ...

Long-tailed macaques given short videos were glued to scenes of fighting—especially when the combatants were monkeys they knew—mirroring the human draw to drama and familiar faces. Low-ranking ...