The silky sifaka is a large lemur species and it has a very restricted range in northeastern Madagascar. This species is considered as one of the rarest mammals on earth. This species is Critically Endangered. It is one of the rarest and most critically endangered lemurs. Also, it is on the list of "The World's 25 Most Endangered Primates" and has been on the list of "The world's 100 most threatened species". Today, the population size of this species is estimated to range between 100 and 1,000 individuals. Save them before it's too late!