The diademed sifaka is in the Primate order, the Indriidae family, the Prosimii suborder, and the Propithecus Genus species. This sifaka is about the size of a dog, with a body length of 21, and a tail length of 18 inches. They weigh 13 to 16 pounds. Their fur is mostly white, but the back of their necks and the top of their heads are black, as well as their hands and feet. The hindquarters and limbs are golden. This sifaka lives in the eastern rain forests of Madagascar, north of the Mangoro River to below the Antainambalana River. Their main food sources are leaves, flowers, and fruit. There is not much information known on mating. The gestation period is unknown, as well as when they mate. They are presumed to have one young per year. There is only one diademed sifaka in captivity in the world, and it lives at the Duke Primate Center. Their guessed lifespan is 25 to 30 years.