Gay animal

I suppose this isn't a news that there are other gay animals in the world, however, it is interesting to mention that a quarter of black swan family will mate with females and chase her away after she laid her eggs and raised them with another male black swan.

• Bonobos have an even prevelent rate of mating homosexually, but then again they have sex with everyone in their group.
• Bottlenose dolphins are generally bisexual, and goes through phases of exclusive homosexuality

There are several more of animals that exhibits homosexual behavior. These are just some of them.