The Rarest Animals On Earth

Published December 11, 2014
Updated January 23, 2017
Rarest Animals Sloth Up Close

Source: Wikipedia

It’s surprisingly difficult to determine the rarest species — mainly because animals don’t really participate in censuses. Some animals are so rare that they might already be extinct and we just don’t know it yet. Others are extinct in the wild and can only be found in captivity. But from what we know, the four creatures featured below are as rare as prime rib.

Pygmy Three-toed Sloth

Sloth Fish

Source: List Crown

The sloth is already one of the most adorable creatures on Earth, but to be honest, it’s not really much of a survivor. You put it in any kind of dangerous situation and it is likely to perform poorly. Therefore, it shouldn’t be that surprising to find out that the pygmy three-toed sloth is critically endangered.

Right off the bat, we weren’t really expecting the species to be in abundance. It is endemic to a small island near Panama called Escudo de Veraguas so there’s not a lot of room to thrive. Even so, we were expecting the population numbers to be somewhere in the mid hundreds. The latest study showed that there are only 79 still poking around. It does have one advantage in that the island isn’t inhabited by humans, but poaching is still a problem since the sloth isn’t exactly what you would call a master of escape.

Rarest Animals Sloth Eating

Source: Zoo Chat

Sunda Rhino

Rarest Animals Rhino Up Close

Source: WWF Nepal

More popularly known as the Javan rhino after the island where it is found, the Sunda rhinoceros is considered to be one of the rarest animal species in the world. Fewer than 100 examples are thought to exist in the world. Even though it was once spread all over Southeast Asia, the Sunda rhino is now confined to the Ujung Kulon National Park.

Rhino Camera

Source: WWF

Unsurprisingly, we are the ones most responsible for the rhino’s declining numbers. It was always hunted for its horn, which is pretty weird since one of the definitive traits of the Sunda rhino is having a smaller horn than other species. Although it is closely related to the Indian rhino, it is more comparable in size to the black rhino. Although it has been a protected species for a while now, other factors such as national instabilities (read: wars) have kept the population from recovering.

Radu Alexander
Radu is a freelance writer who specializes in historical, scientific and offbeat topics.