Monkeys are common animals, but watching the weirdest monkey Species is a unique experience. These primate species, found both in jungles and zoos across the globe, exhibit intriguing variations. Although their fundamental shapes remain similar, disparities in size arise due to inherent species distinctions. Unique and unfamiliar primate varieties are rare due to their distant habitats. However, recent research underscores a concerning truth: some of the most extraordinary monkey species stand on the brink of extinction. Urgent action is now imperative, necessitating the intervention of animal protection organizations and governmental bodies. By directing focused attention toward these creatures, we can actively avert the impending disappearance of these remarkable species. The subsequent list comprises the very species in question.


Proboscis Monkey

The Proboscis monkey is one of the most unusual-looking monkeys. Its large, bulbous nose makes it easy to identify. The male monkey’s long, up to 7-inch nose is used to allure females. Moreover, the noses of the females are, however, much smaller. Therefore, even though humans might think this monkey is ugly, its species undoubtedly finds it very attractive due to its nose. Borneo Island, where proboscis is native, is also their only habitat. They have good swimming skills and frequently dive into the water to elude predators. They live in swampy mangrove forests close to rivers. Leaves, fruits, and seeds make up the majority of their diet. While the monkeys consume some insects, they do not constitute a substantial portion of their diet.

According to research, only 3,000 to 5,000 proboscis remain in the world. So, humans have a keen responsibility to stop these primates from vanishing.

How many stomachs do proboscis monkeys have?

Some people are concerned about their stomachs and say they have many stomachs, while the stomach of a proboscis monkey is just one. Although it is split into many chambers. In order for these monkeys to digest the leaves and plants that make up a large portion of their diet, these chambers contain specific bacteria that are made to breakdown cellulose.

Chacma Baboon

Chacma Baboon stand in the green field

Chacma baboons are native to South Africa. They also fall on the list of the weirdest monkey species due to their strange looks. For instance, in contrast to their mandrill cousins’ luxurious fur and distinctive, colorful faces, their plain brown fur is unappealing. Chacma baboons also have sharp canines, large snouts, and sharp angles on their faces. Thus, they are frequently referred to as “dog-faced monkeys.”

Adding to their rather unsettling traits is the crimson or blue hue present on the rear of Chacma baboons. While the exact purpose remains a mystery, there are intriguing theories. One suggests that this coloration plays a role in attracting mates, while another proposes that it facilitates visual communication among the primates. Regardless of the underlying reason, Chacma baboons have found their place on the list of the world’s least aesthetically pleasing primates.

Is Chacma baboon a social animal?

The chacma baboon exhibits a wide range of social behaviors, including as a hierarchy of authority, group searching for food, female adoption of young, and friendship partnerships. These actions are a component of a sophisticated evolutionary ecosystem.


Tarsier sit in the plant

When discussing this particular species of monkey, its appearance stands out remarkably. Often hailed as the most peculiar-looking primate, the tarsier, despite its overall small size, possesses an extraordinary feature: its disproportionately large eyes. Significantly, these eyes encompass about 75% of the animal’s head. Paradoxically, this ocular configuration hinders their daytime vision, pushing them into a nocturnal lifestyle. This adaptation serves them well as they become active primarily at night, leveraging their exceptional low-light vision. Their lengthy and robust legs contribute to their uniqueness, which endears them to observers. These monkeys exhibit high activity levels and can leap up to six feet in the air. These primates display carnivorous tendencies regarding their diet, relying on insects for sustenance.

Do tarsiers have poison?

Like several other Asian monkeys, such as slow lorises, tarsiers are capable of producing venom. They have a gland in their elbows or arms that secretes a poison. When threatened, tarsiers will combine poison into their saliva, becoming it deadly.

Bald Uakari

Brown Bald Uakari

It is the strangest of all the weirdest monkeys, and is well known as a long-tailed monkey.  Regarding habitat, it exists in the entire Amazon forest. Identifying them is very easy because of their hairless heads and long white tails. Their head color is red, which offers the extraordinary feeling of seeing them. Consider a monkey with long hair sitting around a bald Uakari. Male monkeys are larger than females. Their size proceeds to a maximum of 15 inches, and the maximum weight noted till now is 5 pounds. They are named “scarlet fever uakari” because of their red faces due to vessels.

Spider monkey

Black Spider monkey is running

Like all of the monkeys mentioned above, the spider monkey also has a weird face and is found in Central and South America. It is known to have a long tail and long limbs, like spiders. It looks more like an alien than other creatures. Other living things find them weird when they jump across the trees, using their long and strong tail as the fifth leg. Surprisingly, these monkeys can walk on two or four legs. Another mandatory trait to discuss here is that they are very clever. They use other things to scratch their bodies, which clearly shows that they are intelligent too.

Are spider monkeys prone to illness?

These wild creatures are capable of causing severe and catastrophic harm because they are constantly frustrated. Additionally, they have the ability to disseminate illnesses that can kill people, including as parasitic, bacterial, fungal, and viral infections. Monkeys frequently have simian herpes B, hepatitis, and TB.


The aye-aye, a lemur species residing in Madagascar, holds the distinction of being the largest nocturnal primate. It possesses distinctive physical features: prominent, gremlin-like eyes; a lengthy, shaggy coat of dark hair tipped with white; a pale face; and large, black ears. Its tail is bushy, akin to a squirrel’s, and its dental arrangement is slightly unusual, highlighted by notably large incisors (front teeth) that undergo continuous growth. While these characteristics alone classify the aye-aye as an unconventional primate, its most remarkable trait is its “wiry third digit—an elongated, slender third finger on each hand.

Why is this monkey called Aye-Aye?

They got this name because of a sound “hai-hai” they make when find any threat near them.


Monkeys are very easy to see in our surroundings, but the weirdest monkey species discussed above are not expected. All of these primates have different sizes and characteristics. A suggestion to organizations and governments is to look after these animals for their survival. They are not only ugly in appearance but also similar to aliens.

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Hello! I'm Gian Wylde, and I'm currently posting articles for you. I have life experience in giving monkey what they need and what is good for them.