At Ol Pejeta in Kenya, two of the remaining Nile rhino have mated. Suni and Najin have mated twice in the last few weeks: on April 25th 2012 and on May 27th! This gives a glimmer of hope for the critically endangered northern white rhino subspecies.
http://www.olpejetaconservancy.org/about/news/hope-northern-white-rhinos-suni-and-najin-mate-twice
