Why is rhinos endangered

Three of these (black, Sumatran and Javan) are listed as 'critically endangered' by IUCN – there are thought to be fewer than 70 Javan and Sumatran rhinos. World's rarest rhino There are now just two northern white rhinoceros remaining in the world. Najin and Fatu (both female) live under constant protection from. The black, or hooked-lipped, rhino has a thick, hairless gray hide. Both rhinos have two horns. Conservation Status. Critically Endangered. Scientific name.