"When he first tried to mount the girl, the rangers guided him ... "We removed them from a zoo environment, which was not conducive to natural instincts, and put them in a semi-wild environment.
There were a couple of matings, but it never resulted in a pregnancy." Poachers sell northern white rhinos horns for $50,000 per kilo, making them more valuable than gold or cocaine, and his keepers fear that Sudan, who at 43 is ancient for a rhino, may die or be killed before they can raise enough money. He's old, he might die soon," said rhino expert Richard Vigne, the CEO of Ol Pejeta.
The word "white" in the name "white rhinoceros" is often said to be a misinterpretation of the Afrikaans word ) meaning wide, referring to its square upper lip, as opposed to the pointed or hooked lip of the black rhinoceros.
These species are now sometimes referred to as the square-lipped (for white) or hook-lipped (for black) rhinoceros.
The species overall is classified as critically endangered (even though the South-western black rhinoceros is classified as vulnerable), and three subspecies, one including the western black rhinoceros, were declared extinct by the International Union for Conservation of Nature (IUCN) in 2011.