Suggested identities range from a mythological creature to an elephant, hippopotamus, rhinoceros, or buffalo. The riverbeds further inland are home to baboons, giraffes, lions, black rhinoceros and springbok. Nleya, who claimed the ZNA was involved in rhinoceros and elephant poaching in Mozambique. Paraceratherium is an extinct genus of hornless rhinoceros. Some aggressive interactions between elephants and rhinoceros have been recorded. The plural in English is "rhinoceros" or "rhinoceroses". The one-horned rhinoceros is monotypic. The woolly rhinoceros and mammoths died out between 16,000-11,500 years BP. The Kaziranga is a refuge for the fast-disappearing Indian one-horned rhinoceros. Wild animals were also hunted for things such as ivory and rhinoceros horns. The reproductive habits of the Sumatran rhinoceros have been studied in captivity. It is a subspecies of the black rhinoceros. The name means "double-horned rhinoceros". Over 300 species of rhinoceros beetles are known. The Javan rhinoceros never fared well in captivity.