Sumatran orangutan

The Sumatran orangutan lives in the forest.

Their name means "person of the forest." They have long, pale red hair.

These animals are very smart. They use sticks as tools. They use sticks to find bugs. They also use them to get honey.

They love to eat soft fruit. They like figs and jackfruit. They also eat small bugs. Sometimes they eat bird eggs.

A baby stays with its mother. It stays close for many years. The mother carries the baby. The baby sleeps in her nest.

There are not many left in the wild. People are working to help them. We want to keep them safe.

The Sumatran orangutan lives on the island of Sumatra.

Their name means "person of the forest." They have long, pale red hair.

These great apes are very smart. They use tools to find food. They may snap off a small branch. They use the stick to dig for termites. They even use sticks to reach honey in bee nests.

Some orangutans even make "toolboxes" to save useful sticks.

Sumatran orangutans love to eat fruit. They like figs and jackfruit. They also eat insects like ants. Sometimes, they eat bird eggs or small animals.

Babies stay with their mothers for a long time. An infant stays close for about two and a half years.

They grow into adults over many years. Adult males can weigh up to 90 kilograms. This is about the weight of a human.

There are only about 13,846 of them left in the wild. This makes them critically endangered. This means they are at a very high risk of disappearing. People are working hard to protect them.

The Sumatran orangutan is a very special type of great ape.

Its name comes from two Malay words. "Orang" means person and "hutan" means forest. So, the name means "person of the forest."

These animals live only on the island of Sumatra in Indonesia. They are rarer than the Bornean orangutan. However, they are more common than the Tapanuli orangutan.

Today, they are critically endangered. This means they face a very high risk of disappearing. There were only about 13,846 of them left in 2017.

These apes are famous for being very smart.

They use tools to help them find food in the trees. For example, they might break off a tree branch. They snap off the twigs and fray the end with their teeth. They use these sticks to dig for termites in tree holes. They also use them to poke bee nests to get honey. Some orangutans even make toolboxes. They collect and save useful sticks for later. They might even use a five-inch stick to peel hairs off a Neesia fruit. This helps them eat the seeds safely.

Living in the trees is a big part of their lives.

They are very good at moving through branches. They move slowly and use many different body positions. This helps them stay steady on moving tree limbs. Because they are heavy, they must be careful. They can even sway trees back and forth to help them move. This way of traveling is called semibrachiation.

They also spend most of their time high up in the forest canopy.

An orangutan's life has five different stages.

It starts with infancy, which lasts about 2.5 years. Small infants weigh between 2 and 6 kilograms. They stay very close to their mothers for food and sleep. Next is the juvenile stage from age 2.5 to 5. Then comes adolescence from age 5 to 8.

By age 8, females are fully developed. Males enter a stage called sub-adulthood. They grow cheek flanges, which are large pads on the face. By age 15, males are fully grown adults. They can weigh as much as a human, up to 90 kilograms.

Diet is very important for their survival.

They mostly eat fruit, which is called being frugivorous. They love figs, jackfruit, and durians. They also eat many kinds of insects like ants. In some areas, they have been seen eating small animals like the slow loris.

They even find water in natural bowls in trees. Some drink water from the hair on their arms after rain. These clever animals have lived in Sumatra for a very long time. Scientists even found fossils of ancient orangutans from the Pleistocene era.

The Sumatran orangutan, known scientifically as Pongo abelii, is one of three distinct orangutan species.

They live exclusively in the northern part of the Indonesian island of Sumatra. These great apes are currently classified as critically endangered. As of 2017, the total population was approximately 13,846 individuals.

Their name comes from the Malay words "orang," meaning person, and "hutan," meaning forest. This translates to "person of the forest." They are rarer than the Bornean orangutan but more common than the Tapanuli orangutan.

Sumatran orangutans are highly intelligent and demonstrate complex tool use.

In the Suaq Balimbing swamp, they have been observed creating specific tools for different tasks. To find termites, an orangutan might break off a foot-long branch. They snap off the twigs and fray the end with their teeth to create a probe. They also use sticks to poke bee nests to reach honey. For the Neesia tree, they use a five-inch stick to strip bark. This allows them to carefully collect painful, fiberglass-like hairs from the fruit. Some individuals even collect entire "toolboxes" of useful sticks for later use.

These apes are primarily arboreal, meaning they live mostly in trees.

Because they are the heaviest mammals to travel through trees, they must manage branch compliance. Compliance refers to how much a branch bends or moves under weight. To stay steady, they use slow movement and long contact times with branches. They also use quadrumanous locomotion and semibrachiation to move through the canopy. They can even sway trees back and forth to lower the energy cost of moving. This lifestyle may be driven by the need to avoid ground predators like the Sumatran tiger.

An orangutan's life consists of five distinct stages.

Infancy lasts from birth to 2.5 years, with weights between 2 and 6 kilograms. During this time, the infant is highly dependent on the mother for food and sleep. Juvenilehood follows from age 2.5 to 5 years. In the adolescent stage, from age 5 to 8, the light patches on their faces disappear. Females become fully developed at age 8. However, males enter sub-adulthood, weighing between 30 and 50 kilograms. They begin to develop cheek flanges, which are large pads on the face.

Finally, males reach full adulthood between 13 and 15 years of age.

Adult males are massive, weighing between 50 and 90 kilograms. This is roughly the weight of a fully grown human.

They possess fully developed cheek callosities and long hair. While females typically live 44 to 53 years in the wild, males live slightly longer. Males can live between 47 and 58 years. Some recorded orangutans have lived much longer in captivity. Puan, at the Perth Zoo, was believed to be 62 years old. Bella, at the Hagenbeck Zoo, is believed to be 61 years old.

Diet plays a major role in their survival and behavior.

They are primarily frugivorous, which means they eat mostly fruit. They prefer fruits with large seeds and fleshy parts, like durians and jackfruit. They are also insectivorous, eating many types of ants and other insects. In the Ketambe area, they have eaten over 92 different kinds of fruit. When fruit is scarce, they may occasionally eat the meat of a slow loris. They even find water in natural tree bowls or from rain caught in their arm hair.

Communication among Sumatran orangutans relies on gestures rather than sound.

Researchers have identified a repertoire of 64 different gestures. About 29 of these have specific, intentional meanings. These include signals to share food, move away, or stop an action. Interestingly, they do not use audible danger signals. Their social structure is also unique. While they form loose clusters around fruit trees, adult males generally avoid one another. This complex social and biological system makes the Sumatran orangutan a vital subject of scientific study.