WEIRD NEWS
10/06/2014 02:15 pm ET Updated Oct 06, 2014

Japanese Zoo Spends Years Trying To Mate Male Hyenas

Picture by Tambako the Jaguar via Getty Images

Hyena sexing by sight alone is "very difficult," says a Japanese zoo that spent years trying to mate a pair of males.

The Maruyama Zoo in Sapporo says Kami and Kamutori were obtained in a 2010 exchange with a South Korean zoo that said they were a male and female pair.

Zookeepers put the pair in the same cage for breeding in 2012 but didn't discover they were both males until experts conducted hormone checks while they were under anesthesia.

Read more on Newser.com

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