Western Black Rhino Officialy Declared Extinct

Western Black Rhino specie has been officially been declared extinct by International Union for Conservation of Nature (IUCN).
IUCN also said that two other species of rhinos were also about to extinct. One is Northern White Rhino of central Africa which is now "possibly extinct" in the WILD and the other is Javan Rhino which is now "probably extinct" in Vietnam, after poachers killed the last animal there in 2010.
 Many efforts are made to conserve species despite which, IUCN reports that 25% of mammal specie are at the risk of extinction.