#1 The Pygmy Rabbit
The Pygmy Rabbit is found in North America and is the smallest rabbit in the world. The adult rabbit can grow to 9.4 inches long and the average weight is 14 ounces. Because this rabbit is so small, it often looks for areas with deep soil so that it can burrow deep into the ground to escape from predators. Of all the species of rabbits, the Pygmy Rabbit is the smallest and the most adorable.
#2 Pygmy Marmoset
Of the 10 smallest animals in the world, this one if the most adorable. The Pygmy Marmoset is also known as the Dwarf Monkey. It is often found in the rainforests of Columbia, Brazil, Ecuador, Bolivia, and Peru, and it is the smallest monkey in the world. It is an extremely small animal and it weighs just 0.5 ounces at birth. It doesn’t grow much after that. On average, this monkey grows to be 5 ½ inches, not counting its tail. The Dwarf Monkey is both tiny and adorable.
#3 Madame Berthe’s Mouse Lemur
The smallest known primate is the Madame Berthe’s Mouse Lemur. It is often found in Madagascar, however, it is so small that it is very difficult to stop. The average size of this animal is 3.6 inches long. The average weight is just 1 ounce. Most of the Madame Berthe’s Mouse Lemurs have been found in the Kirindy Mitea National Park in Western Madagascar. If you are planning to visit the national park, don’t expect to come across this tiny animal. It is so small it is difficult to find. Also, due to its size, it is great at hiding from predators.
#4 Paedophryne Amanuensis
The Paedophryne amanuensis is the smallest frog in the world. This species was recently discovered in 2009. Because it was recently discovered, it doesn’t have a common name. It is only known by its scientific name. This species has likely been around for centuries, but due to its size, it was never discovered. The average size of this frog is 0.3 inches. Not only is it the smallest frog ever discovered, it is also the world’s smallest know vertebrae.
#5 Etruscan Shrew
The Etruscan Shrew is also known as the Etruscan Pygmy Shrew or the White-toothed Pygmy Shrew. It is a very tiny animal. It is considered the world’s smallest mammal, even though it is slightly longer than the Bumblee Bat. This tiny animal is about 2 inches long from its head to the base of the tail and it weighs just 0.1 ounces. This tiny animal’s brain is the largest in ratio to its body of all animals and humans. Even though its brain is so large, scientists believe that it isn’t any smarter than its relatives.
#6 Speckled Padloper Tortoise
The Speckled Padloper Tortoise is the smallest turtle in the world. It is most commonly seen in South Africa. The female tortoise is typically larger than the male. The average size of a female is 4 inches and the average size of the make is 3.1 inches. It isn’t just this tortoise’s tiny size that makes it so unique. The tortoise has a colorful, speckled shell which makes it a very unique turtle.
#7 The Bee Hummingbird
The bee hummingbird, also known as the Mellisuga helanae, is the smallest bird in the world. It is also the smallest warm-blooded vertebrate. This adorable little bird is just 2.2 inches in length and it weighs just 0.06 ounces. The bird flies so quickly that it is often confused with a bee, which is where it got its name. If you want to catch a photo of this bird, you better have a great camera. Often times, it photographs as just a blur due to its extreme flying speed.
#8 Kitti’s Hog-Nosed Bat
The Kitti’s Hog-Nosed Bat is also known as the Bumblebee Bat and it is commonly found in Burma and Thailand. This bat is about the size of a bumblebee, with an average length of 1.6 inches. The bat weighs just 0.07 ounces. This bat lives in limestone caves located along the river. You can find over 100 bats living in a single cave. This bat has a very unique appearance due to its distinctive pig-like snout.
#9 Booped Squished Octopus
This is the tiniest octopus in the world. It is so small that it can fit on the tip of your finger with plenty of room to move around. It is often found on the floor of the ocean. This octopus is translucent, making it easy to hide from predators.
#10 Slender Blind Snake
The Slender Blind Snake is also known as the Thread Snake. This is one of the smallest snakes in the world. It grows to be just 4.3 inches in length. This snake is typically found in Asia, Africa, South America and North America. This snake’s diet consists of ants and termites. When the snake feeds, it sucks the insect from its body and then discards the skin. Many people who come across this snake often confuse it for a worm due to its small size.
Bonus Animal: Paedocyrpris
The Paedocypris is the smallest fish in the world. It grows to be just 7.9 mm in length. It is also the smallest vertebrae in the world. This fish is often found in Indonesia’s Sumatra Island in the peat swamp forest. Due to their size, they are very difficult to find.