BBC - Earth - We have the wrong idea about males, females and sex
Homosexuality may have evolved for social, not sexual reasons
10 animal species that show how being gay is natural | All media content | DW | 02.08.2017
Let's talk about gay penguins: Munich zoo joins Pride week
Are there gay animals in nature? Homosexuality in the animal world
Homosexual Lions, or Something Else Entirely? | Plants And Animals
Can Animals Be Gay? - The New York Times
Yes, those cuddling lions are male. But that doesn't mean they're gay. - The Washington Post
There is no homophobia in the animal kingdom | Environment| All topics from climate change to conservation | DW | 02.08.2017
Homosexual Activity Among Animals Stirs Debate
BBC - Earth - Are there any homosexual animals?
Homosexual behavior in animals - Wikipedia
Enter the Aardvark — a tale of closeted gay love. And taxidermy | Financial Times
Are 90% of giraffes gay – or have their loving looks been misunderstood? | Animal behaviour | The Guardian
Are there gay animals in nature? Homosexuality in the animal world
Yes, those cuddling lions are male. But that doesn't mean they're gay. - The Washington Post
Amazon.com: Homosexual Behaviour in Animals: An Evolutionary Perspective (9780521182300): Sommer, Volker: Books
10 animal species that show how being gay is natural | All media content | DW | 02.08.2017
Scientists explore the evolution of animal homosexuality | Imperial News | Imperial College London
Farmers say expert's claim that one in twelve sheep is gay is 'nonsense' | The Independent | The Independent
Gay Animals: Alternate Lifestyles in the Wild | Live Science
Kenyan official says male lions who had sex 'must have seen gay men behaving badly' and should be separated | The Independent | The Independent
List of mammals displaying homosexual behavior - Wikipedia
