Since it was discovered, two people died in a posture of embracing each other under volcanic ash in Pompeii nearly 2,000 years ago to become a research topic of scientists.
The history tells that Alexander the Great had a homosexual tendency because he fell in love with the commander of the cavalry Hephaestion, both sticking together as lovers.
Scientists encountered a homosexual case in the terns, when three males repeatedly tried to mate with corpses on the side of the road.
A dog in Bangladesh became famous after rescuing a monkey escaping death and feeding the poor animal with its milk.