Maruyama Zoo tries to mate two spotted hyenas for four years, recently learns both are males

Maruyama Zoo in Sapporo, Hokkaido was the scene of awkwardness on 26 September when it was learned that two spotted hyenas slated for making babies were actually both males. At first this might seem like a major oversight of really basic biology, but in the unique case of the spotted hyena it’s actually fairly understandable.

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