Little is known of this exceptionally rare mammal. It is mainly a browser of leaves, twigs, fruits and shoots and often breaks saplings down to access food (4). Females reach sexual maturity at about five to seven years of age, whereas males become mature later, typically at about ten years of age (5). The rate of reproduction in this species is relatively slow; females give birth to a single young every one to three years, after a presumed gestation of 15 to 16 months, as in other rhinos. With the exception of mothers with their offspring and mating pairs, the Javan rhinoceros is a largely solitary species (5).