Males are much larger than females and develop large pads on their cheeks called “flanges” and large throat pouches at the age 15 to 20, and are known to live in the wild for 30-40 years.

Orangutans are arboreal, spending most of their time in trees. They eat and sleep in the trees, building nests for sleeping. Their long arms and flexible joints allow them to move gracefully through the trees. 

Be cautious below! Orangutans are very messy eaters. That is a good thing when it comes to seeding the forest floor, generating new growth.

Male orangutans are very solitary, they will be seen around females they are trying to mate. Females only give birth every seven to nine years.

Females will raise infants alone, staying with their young for six to seven years. Mom teaches them where to find food, what and how to eat and the technique for building a sleeping nest.

Young ones knows to hold on tight as mom is on the move. Young ones will nurse on their mothers for four to five years.

An orangutans total food and water supply is found in the trees. They love eating bark, fruits, leaves, insects, and occasionally small vertebrates.

When mom is stationary,  little ones seize the opportunity to burn off energy test their climbing, hanging and swinging skills.

Moms uses their seven foot arm span to create a bridge covering a large gap allowing the young to climb across them. This one prefer independence.

The Pig tailed macaques have olive brown fur over their bodies, with white undersides and a black patch on top of their heads

While sittng on a tree branch this family of Pig tailed macaques has taken the opportunity to  groom each other.

The Thomas's langur or leaf monkeys, are also seen and heard swinging from branch to branch through the trees of the rainforest in Sumatra.