JAVAN RHINO – Rhinoceros sondaicus CRITICALLY ENDANGERED ~72; POPULATION STABLE Javan rhinos exist only in Ujung Kulon National Park in Indonesia, where they are protected by the Rhino Protection Units. The population increased in number from 68 to 72 in 2019. They travel through the jungle, staying near rivers and streams. Like most others, the Javan rhino lives alone. Males and females meet only to mate.