From bbc.co.uk
The West African black rhino appears to have become extinct, according to the World Conservation Union (IUCN).
A mission to their last known habitat in northern Cameroon failed to find any rhinos or signs of their existence.
The sub-species has declined in recent decades due primarily to poaching, which has also brought the northern white rhino close to extinction.
This is sad news. I remember a few months back a Griff Rhys Jones documentary on the black rhinos. In one rememberable moment he said to a class of African school children. Who here has seen a black rhino (nobody answers) Who he has seen an elephant (everyone puts their hand up.) However numbers of other Rhino sub-species are low yet slowly rising. The poaching isn't stopping though.
Full Article: http://news.bbc.co.uk/1/hi/sci/tech/5167266.stm