#black rhinoceros #black rhino #rhinoceros #diceros #bicornis #rhinocerotidae #perissodactyla #mammalia #chordata #animalia #critically endagered #africa #great rift valley #african great lakes #serengeti #swahili coast #southern africa #kalahari desert #terrestrial #savanna #grassland #desert #forest #the faunal frontier #thefaunalfrontier