The Proboscis Monkey, or Nasalis larvatus, is a tree-dwelling endemic species found on the island of Borneo in South-East Asia. This species belongs to the Colobinae family of the Ancient World Monkeys. Their most characteristic physical features are undoubtedly their long snout. Nasalis larvatus is one of the largest apes of the Asian continent, along with the Tibetan Macaque and Gray Langur. Male Proboscis 66 - 72 cm. between paint and 30 kg. female Proboscis at most 62 cm. height and 15 kg. they can reach weight. This sexual amorphousness is not only limited in length and weight, males also have a 10cm snout, while females have a shorter snout than males but are still longer than other primates. Males can use their long snouts to invite the female into intercourse. Another use is to communicate and warn against dangers in the environment. In case of danger, their noses fill with blood and they make a much hoarse sound than they normally make.