article_snippet: The penguins, who live in New York's Central Park Zoo, were noticed performing mating rituals in 1998, by staff - although The penguins, who live in New York's Central Park Zoo were never seen to perform sex acts.
article_snippet: The penguins, who live in New York's Central Park Zoo were then given an egg to hatch and raise as The penguins, who live in New York's Central Park Zoo own - a practice copied by zoos across the world.
article_snippet: The penguins, who live in New York's Central Park Zoo chick, named Tango, grew up to form a same sex relationship with another female penguin.
article_snippet: The penguins, who live in New York's Central Park Zoo story was the basis for a controversial children's book in 2005 called '
article_snippet: New York's Central Park Zoo has ever had.