What is unique about the proboscis monkey?

What is unique about the proboscis monkey?

Proboscis monkeys are the primate world’s most prolific swimmers, frequently leaping from tree limbs and hitting the water with a comical belly flop. They’ve evolved webbed feet and hands to help them outpace the crocodiles that are some of their main predators.

What is a proboscis monkeys behavior?

Behavior. Proboscis monkeys are diurnal, preferring to be active from late afternoon until dark. They are primarily arboreal although they are never more than 600 m from a river. When moving through the trees, they are quadrupedal. These monkeys are good swimmers and will leap out of the trees into the water.

Are proboscis monkeys friendly?

Proboscis monkeys live in stable social groups, the sizes of which can vary from 3 to 26 individuals and consist of one adult male, several females, and their infants and juveniles. Groups are found near one another and may join together. These larger groups serve to help reduce predation or avoid displacement.

How fast can a proboscis monkey run?

15 miles per hour
A Proboscis Monkey can travel at speeds of up to 15 miles per hour.

What unusual facial feature inspired the name of the proboscis monkey?

Named for the male’s long and pendulous nose, the proboscis monkey is red-brown with pale underparts. The nose is smaller in the female and is upturned in the young.

Are proboscis monkeys aggressive?

Proboscis monkeys generally live in groups composed of one adult male, some adult females and their offspring. Serious aggression is uncommon among the monkeys but minor aggression does occur. Overall, members of the same bands are fairly tolerant of each other.

What adaptations do proboscis monkeys have?

They have webbed toes, an adaptation that enables them to swim long distances. Called the ‘Dutch monkey’ in local language due to their large nose and pot belly. They have stomachs a bit like cows, regurgitating their food only to swallow it back down for a second digestion.

Do proboscis monkeys have opposable thumbs?

Hands and feet have five fingers and opposable thumb (at least in hands) allowing them to grasp and manipulate objects with precision. Although some have claws, most have flat nails and all (except some orangutans) have a flat nail on the big toe.

Why does a proboscis monkey have a big nose?

The nose of the proboscis monkey evolved because of sexual selection. It is a true signal of a male’s body and testis size and there is a correlation between nose size and the number of females a male has.

What are the predators of proboscis monkeys?

Predators (potential or confirmed) of the proboscis monkey include crocodilians (likely false gharials and saltwater crocodiles), clouded leopards, sun bears and reticulated pythons as well as, for probably young or sickly proboscis monkey, eagles (possibly larger Nisaetus, Haliaeetus, crested serpent eagle or black …

Why does the proboscis monkey have a big nose?

Do hominoids have Y 5 molars?

Within this grouping, the two families Hylobatidae and Hominidae can be distinguished from Old World monkeys by the number of cusps on their molars; hominoids have five in the “Y-5” molar pattern, whereas Old World monkeys have only four in a bilophodont pattern.

What is the life span of a proboscis monkey?

The males will have to leave the group when they are about 1 ½ years of age. The females though are able to remain for their entire life if they would like to. The Proboscis Monkey has a short life span in the wild of about 13 years.

What does a proboscis monkey sound like?

Proboscis monkeys do make vocal communication. The male will sound loud, usually he will honk; and there are special honks for infants and calls for reassurance also. However, males have been known to sound calls when there is danger coming.

How do proboscis monkeys protect themselves?

They sleep in trees, preferring thick branches growing over water, to protect themselves from predators. Proboscis monkeys are excellent swimmers, but only swim only when necessary, as when crossing rivers.

What does a proboscis monkey look like?

The proboscis monkey has a coat of long, pale orange-brown fur. Its limbs and tail are gray, and its face is hairless and light pink in color. Both sexes have big, bulging bellies, long tails, and partially webbed fingers and toes.