Often when people look for examples of homosexuality in the animal kingdom outside of humans, they look toward penguins, who not only sometimes choose a partner who is of the same sex, but who also mate for life. The love story of two male penguins (Roy and Silo) has even inspired a children’s book And Tango Makes Three that has taught kids everywhere the power of love and family. Another same-sex couple has been discovered at the Ramat Gan Zoological Center in Israel where staff discovered that two penguins, Chupchikoni and Suki, are both actually women. Up until the staff tested the penguins’ blood they thought the two were a heterosexual couple, but blood-test results revealed their genders as female.