Howler Monkey

There are 9 different species of howler monkey, found dispersed throughout the tropical jungles of South America. The howler monkey is one of the largest species of monkey found in South America with some howler monkeys growing to nearly a meter long.
Despite their large size, howler monkeys weigh less than 10 kg which allows them to move with more agility through the high trees and lets the howler monkeys hang from branches by their tails when picking fruit.
The howler monkey is thought to have to loudest call of all the primates in the world with some howler monkeys being able to project their howling voices for up to a few miles! Howler monkeys move in troops of around 18 howle

Yak

The yak is a herd animal found in the mountainous regions of central Asia. The yak tend to gather in herds from 10 yaks to 100 yaks, most of which are female. There are only a few male yaks per herd.
Although there is a large domestic population of yak, there are only a few wild yak remaining . The yak is still used in many parts of central Asia, for pulling heavy farm machines and transporting large loads through the mountain passes.
The average male yak can grow to about 2meters tall, with the female yak being about 1/3 the size of the male yak. All yak have very long hair to keep them warm.
The yak belongs to the same cow family as the Asian water buffalo, the African bu