Many animal species that live in groups are known to adjust their behavior to strengthen their social bonds or increase their coordination with others around them. For instance, humans and some other ...

Researchers found that New World monkeys can produce extreme yodeling-like sounds by rapidly switching between their vocal folds (for low tones) and specialized vocal membranes (for high tones), ...

In the Democratic Republic of Congo, a team of researchers discovered a new species of monkey and formed deep friendship along the way.