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Wednesday, 26th November 2008
In General Japan News,

Zoo solves polar bear mating puzzle

Japanese zoo officials who were puzzled at the failure of two polar bears to mate have finally solved the mystery - they are both female.

The bears are inhabitants of a zoo in the northern city of Kushiro. One of the bears, Tsuyoshi, had been traded for an orangutan in 2005 and was intended as a mate for a female bear called Kurumi.

Zookeeper Hiroyuki Kubono commented: "Even though the rutting season came in spring this year, Tsuyoshi didn't show mating behaviour such as chasing after a female bear We thought it might be because Tsuyoshi was still too young."

Following DNA tests, it was discovered that Tsuyoshi was actually a she, not a he, report AFP.

Mr Kubono added: "Tsuyoshi came here when she was a cub and people just love her."

Kushiro is located in Hokkaido Prefecture, 90 minutes flight from Haneda airport in Tokyo.



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