All told, 88 primate species were seen interacting with 127 different species.

Palantir cofounder Joe Lonsdale is investing in an animal testing company that aims to secure a national supply chain of monkeys for biomedical testing.

Newly released footage of infant monkeys undergoing experiments at a University of Washington research laboratory is reigniting the debate over whether primates are still necessary for biomedical ...

Textbooks say human birth is uniquely hard because of our big heads. A new primate comparison found squirrel monkeys, ...

Researchers discovered that macaque monkeys exposed to a deadly disease became more wary of potentially contaminated food. The post Monkey see, monkey don’t? Primates shun filthy food after virus ...

Some monkeys become significantly more cautious about food sources that appear contaminated after experiencing deadly outbreaks of disease.

Primates—the group of animals that includes monkeys, apes and humans—first evolved in cold, seasonal climates around 66 million years ago, not in the warm tropical forests scientists previously ...

Thirteen million years ago, a medium-sized monkey known for guarding its territory among the treetops with a fearsome "howl" started doing something new. This monkey, one of the oldest known ancestors ...

Two young spider monkeys confiscated from wildlife traffickers arrived at a Utah zoo too young to survive without their ...