animal
гомасексуалі́зм
хомосексуа́лност
homosexuality
homoseksualitet
animal homosexuality
http://id.loc.gov/authorities/subjects/sh85061790
https://en.wikipedia.org/wiki/Homosexual_behavior_in_animals
QL761
Homosexuality as observed in animals.
homosexual behavior in animals
homosexuality in animals
Encyclopedia of Homosexuality