Over the years, scientists have recorded same-sex sexual behavior in more than 1,500 animal species, from snow geese to common toads. And for just as long evolutionary biologists studying these behaviors have grappled with what has come to be known as a “Darwinian paradox”: How can these behaviors be so persistent when they offer no opportunity to produce offspring?
Click here for original story, Should scientists change the way they view (and study) same sex behavior in animals?
Source: Phys.org