Attica Zoological Park, Athens.

The East Javan langur (Trachypithecus auratus), is an Old World monkey from the Colobinae subfamily. It is most commonly glossy black with a brownish tinge to its legs, sides, and "sideburns". It is found on the island of Java, as well as on several of the surrounding Indonesian islands. Like all langurs, this species' tail is noticeably long, measuring up to 98 cm in length while the body is only around 55 cm long. Juveniles are orange in color. The East Javan langur inhabits the interior and peripheral areas of rainforests. Its diet is primarily herbivorous, eating leaves, fruit, flowers, and flower buds, although it also eats insect larvae. Like other langurs, the East Javan langur is a social animal, living in groups of around seven individuals, with one or two adult males in the group. Although they will look after offspring of other mothers as well as their own, adult females are aggressive towards females from other groups. The brighter coloring of juveniles may alert females to their presence and ensures that they will always be noticed and protected. This species has no discernible mating season and females produce one offspring at a time. (wikipedia)