Unlike many humans, some monkeys are genuinely faithful to their mates. A species known as Azara's owl monkeys tends to be monogamous, according to a new study of these primates. The research also ...

Just like us, our primate relatives seek sexual gratification, though the ways they do so might seem a little strange. Ongoing research on the Japanese macaque (Macaca fuscata), also known as the snow ...

Northern muriquis, which live in the Atlantic forest of Brazil, are one of the most endangered species of monkey in the world. To better understand what goes on in the mating lives of muriquis, ...

It may seem hard to believe, but male proboscis monkeys use their fleshy, pendulous noses to attract mates. Scientists think these outsize organs create an echo chamber that amplifies the monkey’s ...

The world's largest species of monkey "chooses" mates with genes that are different from their own to guarantee healthy and strong offspring, according to a new research study. The world's largest ...

The wide-eyed, smiley-faced male Azara’s owl monkeys of Argentina are among the most faithful mates and best fathers in the world, according to a study that also found a strong link between fidelity ...