The global search for the most intelligent animals has become one of science’s most captivating pursuits. From jungles to oceans to treetops, researchers are continually discovering surprising new ...

UTRECHT, Netherlands — Long-tailed macaques living in captivity consistently choose to watch videos of their own group members rather than complete strangers, according to new research. The discovery ...

Animals learn, solve problems and communicate in ways that catch people off guard, and the more scientists study them, the more impressive their abilities look. Some use tools with real intention, ...