Smallest Animals in the World

Biologists have been studying living organisms for hundreds of years and people have always been fascinated with discoveries of new animal species, especially if there is something that sets them apart from the rest.

Today we are going to discover what are the smallest animals in the world. As we know there is enormous amount of animal species, but we will try to cover some of the most famous ones.

Smallest mammal in the world

smallest mammal kittis hog nosed bat

Kitti’s hog-nosed bat is the world’s smallest bat, but it is also much more than that – the smallest mammal in the world. Also called the bumblebee bat due to its small size, they are about 1.25 inches (3.2 cm) long, with a wingspan of about 5 inches (12.7 cm). Smallest mammal weights only 0.07 ounces (2 grams). You can find them in western Thailand and southeast Burma. In case you didn’t get it from their name, they have piglike nose. Unfortunately, these bats are critically endangered and not many of them can still be found in existence.

Smallest reptile in the world

There are two species that share the tittle of the smallest reptile in the world. The first one is the Jaragua Sphaero, or dwarf gecko. It belongs to the Sphaerodactylus specie and was first described back in 2001 in the Caribbean Journal of Science. With a length of 0.63 inches (16 mm), it is truly tiny.

smallest raptile jaragua sphaero

Just like his brother above, Virgin Islands dwarf gecko, also belongs to the specie of Sphaerodactylus. It was discovered in 1964 and has only been found on three of the British Virgin Islands: Virgin Gorda, Tortola, and Moskito Island, thus the name. On average, it measures 0.71 inches (18 mm), and is nearly as small as a United States dime. It weights about 0.0041 ounces (0.117 grams). Not much is known about its population size or its biology.

smallest raptile virgin islands dwarf gecko

Smallest bird in the world

worlds smallest bird bee humming

It’s time to meet the smallest living bird - the tiny Bee Hummingbird or Zunzuncito. The reason for such name is their size, since with the length of 2 inches (5 cm) and a weight of 0.05 ounces (1.5 grams), they are not much bigger than a bee. These mini-birds clap their wings up to 80 times a second, which makes their flight appears blurry to the human eye.

Smallest fish in the world

paedocypris smallest fish

In the dark swamps of Indonesia, you can find the Paedocypris, also known as the world’s smallest fish. It measures just 0.31 inches (7.9 mm) in length on average. Even the biggest recorded specimen is still extremely tiny at 0.41 inches (10.3 mm). However, the small size is the thing that helps them survive during extreme droughts that occur in the acidic waters they inhabit.

Smallest insect in the world

dicopomorpha echmepterygis smallest insect

We’ve come to the very end of this article, so let’s meet the world’s smallest insect – the Dicopomorpha echmepterygis. It is actually a parasitic wasp that can reach a maximum of 0.0055 inches (0.139 mm) in length. This size is exclusive to males, as females are actually about 40% bigger. Their eggs and larvae are, of course, even smaller than the full grown adult. The smallest insect in the world is also blind and wingless.