One of the six remaining northern white rhinos in the world died at the San Diego Zoo Safari Park in California, US, on December 14. The male, named Angalifu, was 44 and died of old age. The death leaves only five rhinos of the species in the world, all living in captivity. Of these five, three are at the Ol Pejeta Conservancy in Kenya. These are Sudan, a male, and Najin and Fatu, both females. The San Diego zoo and the Dvur Kralove Zoo in the Czech Republic have one female each. Angalifu death brings the northern white rhino a step closer to extinction.
— source downtoearth.org.in