Deep in the rainforest, the monkeys are yodeling. Their wild calls echo across the foliage, sending signals of sex and survival. For decades, scientists have studied why they make these sounds, but ...

Humans have practiced some form of yodeling since at least the 13th century, when Marco Polo encountered Tibetan monks on his travels who used the vocal technique for long-distance communication. It’s ...

Primates are a group of mammals that includes humans and our close relatives, such as apes, monkeys and lemurs. Monkeys, such as capuchins and macaques; prosimians, like lemurs and tarsiers; lesser ...

The researchers behind a new study of macaques say our evolutionary relatives have a hidden musical ability we thought was uniquely human.

A new study shows macaque species with more tolerant social systems have larger brain regions linked to emotions and social signals.