Two lion brothers rubbing heads in sign of affection and bonding© RichartPhotos/Shutterstock.com Scientists have recorded same-sex behavior across many animal groups ...

Since gay couples have fewer children, the high frequency of same-sex relationships in humans is puzzling from an evolutionary point of view. Perhaps there are social advantages such relationships ...

Homosexual behavior is not limited to humans. Biologists have reported homosexual behavior in many species of wild animal, ranging from bats and birds to dolphins and primates. When animals engage in ...

EXCLUSIVE: Oscar-nominated actor Elliot Page has signed on to narrate and executive produce Second Nature, a documentary that explodes myths about sexuality and gender in the animal world, revealing ...

While observing a group of rhesus monkeys on a tiny Caribbean island, researchers were shocked by what they saw: widespread homosexual exploits. “I was expecting to see same-sex behavior … but the ...