Beauty Of Animal | The Beauty Of The Proboscis Monkey | The proboscis monkey (Nasalis larvatus) or long-nosed monkey, known as the bekantan in Malay, is a reddish-brown arboreal Old World monkey that is endemic to the south-east Asian island of Borneo. It belongs in the monotypic genus Nasalis, although the pig-tailed langur has traditionally also been included in this genus - a treatment still preferred by some. The monkey also goes by the Malay name monyet belanda ("Dutch monkey"), or even orang belanda ("Dutchman"), as Indonesians remarked that the Dutch colonisers often had a similarly large belly and nose.
A distinctive trait of this monkey is the male's large protruding nose, from which it takes its name. The big nose is thought to be used to attract females and is a characteristic of the males, reaching up to 7 inches in length. The females also have big noses compared to other monkey species, but not as big as the males. Besides attracting mates, the nose serves as a resonating chamber, amplifying their warning calls. When the animal becomes agitated its nose swells with blood, making warning calls louder and more intense.
The nose is a noticeable feature even on infants
Proboscis monkeys exhibit a high degree of sexual dimorphism. Males are much larger than females, weighing up to 24 kg (53 lb) and reaching 72 cm (28 in) in length, with a tail of up to 75 cm in length. Females are up to 60 cm long, weighing up to 12 kg (26 lb). This large difference is greater than in any other primate.
The adult Proboscis monkey is mainly reddish-brown, with grayish limbs. According to Burnie (2001),[Full citation needed] young Proboscis monkeys have a blue face, blackish fur and a relatively normal sized nose at birth. As they grow older, fur coloration changes and the nose grows. Adult males have a large and fleshy nose which overhangs its mouth, but the female does not have a large nose in comparison to the male.
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