Monkeys are known for stealing food and belongings, but scientific experiments suggest their social behavior is much more ...

It's a question that has puzzled thinkers for centuries: Are we humans alone in our pursuit of fairness and the frustration we feel when others get what we want? In recent years, evolutionary ...

Do animals get jealous like people? Researchers say it’s complicated. It’s a question that has puzzled thinkers for centuries: Are we humans alone in our pursuit of fairness and the frustration we ...

Seeing someone else receive a bigger portion can turn a perfectly civilized meal into a personal betrayal. In one experiment, capuchin monkeys could pull a rope that collapsed a table holding another ...

It’s a question that has puzzled thinkers for centuries: Are we humans alone in our pursuit of fairness and the frustration we feel when others get what we want? In recent years, evolutionary ...