Bear Necessities

Japanese zookeepers have discovered why their attempts to mate the two polar bears at the Kushiro city zoo have failed: Both are female. When Tsuyoshi, a supposedly male 4-year-old polar bear was introduced to Kurumi, the zoo's 11-year-old female, "he" failed to make any advances. "One day we realized that the two… » 11/26/08 11:20am 11/26/08 11:20am