A large international study reveals that mammals tend to live longer when reproduction is suppressed. On average, lifespan ...

In the animal kingdom, mating isn’t always about survival. From praying mantises to octopuses, some species die during or soon after reproduction. Expert explains how evolution favours these extreme, ...

Bonds between same-sex individuals help apes and monkeys to manage conflict and strengthen alliances, especially in dry ...

Sexual behaviour among same-sex pairs is common in apes and monkeys, and a wide-ranging analysis suggests it does boost ...

Homosexual behaviour in primates has a deep evolutionary basis and is more likely to occur in species that live in harsh ...