TIL a Japanese zoo unsuccessfully tried to mate a pair of hyenas for four years before realizing both were males.

http://www.itv.com/news/2014-10-03/zoo-realises-it-has-been-trying-to-mate-two-male-hyenas-for-four-years/



Submitted February 04, 2015 at 06:10AM by SirSoliloquy http://www.reddit.com/r/todayilearned/comments/2up86b/til_a_japanese_zoo_unsuccessfully_tried_to_mate_a/