The world's last male northern white rhinoceros dies in Kenya, making the subspecies functionally extinct.
The northern white rhinoceros, or northern square-lipped rhinoceros (Ceratotherium simum cottoni), is one of two subspecies of the white rhinoceros (the other being the southern white rhinoceros). Formerly found in several countries in East and Central Africa south of the Sahara, this subspecies is a grazer in grasslands and savanna woodlands. As of March 19, 2018, there were only two known rhinos of this subspecies left, both of which are female; barring the existence of unknown or misclassified male northern white rhinos elsewhere in Africa, this makes the subspecies functionally extinct. The two female rhinos belong to the Dvůr Králové Zoo in the Czech Republic but live in the Ol Pejeta Conservancy in Kenya and are protected round-the-clock by armed guards.
According to the latest International Union for Conservation of Nature (IUCN) assessment from 2011, the subspecies is considered "Critically Endangered (Possibly Extinct in the Wild)".