Lesbian sex animals

University of Queensland researchers garnered attention last week with their finding that koalas in captivity frequently engage in lesbian sex. But koalas are hardly the first animals to have been outed by scientists. Researchers have identified more than 300 softball-playing and Streisand-loving vertebrate species. Here, Esquire's Field Guide to Gay Animals.

Bighorn Sheep (Ovis Canadensis)
Black Swan (Cygnus atratus)
Bonobo (Pan paniscus)
Boto Dolphin (Inia geoffrensis)
Eurasian (Oystercatcher Haematopus ostralegus)
Flamingo (Phoenicopterus ruber)
Japanese Macaque (Macaca fuscata)
Humboldt Penguins (Spheniscus humboldti)
Killer Whale (Orcinus orca)
Koala (Phascolarctos cinereus)