Did you realize if Indonesia has rarest animal called Javan Rhinoceros
Up until the mid-19th to about the early 20th century, the Javan rhinoceros had ranged beyond the islands of Java and Sumatra and onto the mainland of Southeast Asia and Indochina, northwest into East India, Bhutan, and the south of China. Today, it is the rarest of all rhinoceros, and among the rarest of all living animal species, with only one currently known wild population, and no individuals successfully kept in captivity. It is among the rarest large mammals on the planet Earth.

The Javan species' single horn is so special and different with his sister rhino in Sumatera island (an Island next to Java island). A population of fifty to sixty live in Ujung Kulon National Park, and they were believed to be the last remaining Javan rhino in the world until a small population was recently discovered in Vietnam. However, the Vietnamese subspecies, Rhinoceros sondaicus annamiticus, is now known to be extinct, so Ujung Kulon national Park remains the last home of this magnificent Perissodactyl. In appearance the Javan rhino is closest to the Indian rhino, both having a single-horn and skin folds or plates but there are distinct differences between their neck plates and skin textures.