These Are The Smallest Animals In The World

Check out these super tiny animals 🧐🔍

small animals

Did you know that some of the smallest animals in the world are about the size of a bee? And there are some animals who are even tinier than that!

If you’re curious now about what the smallest animal in the world is, check out this list of super small animals. Plus, find out what the biggest animal in the world is.

(We didn’t include insects here since they’re all pretty small!)

What’s the smallest animal in the world?

Smallest mammal: Kitti’s hog-nosed bat (or the bumblebee bat)

Bumblebee bat
Amarisa M/

The smallest mammal in the world is the Kitti’s hog-nosed bat (or the bumblebee bat), who grows to be only around 3 centimeters long. They’re about the size of a big bumblebee (hence the name).

Smallest bird: Bee hummingbird

bee hummingbird
Wang LiQiang/

There’s another tiny animal who’s often confused with a bee: the bee hummingbird. This animal is the world’s smallest bird, weighing only around 1.6 grams, which is the lowest weight for a warm-blooded animal!

Smallest reptile: Nano-chameleon

nano chameleon
Frank Glaw, Jörn Köhler, Oliver Hawlitschek, Fanomezana M. Ratsoavina, Andolalao Rakotoarison, Mark D. Scherz & Miguel Vences, CC BY 4.0, via Wikimedia Commons

The smallest reptile in the world is a chameleon subspecies called Brookesia nana, or nano-chameleon. They’re so tiny that they’re around the size of a pill and can fit on a human fingertip!

Smallest fish: Photocorynus spiniceps

Photocorynus spiniceps
model of a female Photocorynus spiniceps at the Natural History Museum in London, England. | Emőke Dénes, CC BY-SA 4.0, via Wikimedia Commons

A type of anglerfish known as Photocorynus spiniceps is the smallest fish in the world. Male fish of this species are only around 0.7 centimeters long! That’s smaller than a penny.

What’s the biggest animal in the world?

Blue whale

blue whale
Chase Dekker/

On the other end of the spectrum is the blue whale, which is the biggest animal in the world — and the largest animal to ever live! These whales weigh about 150 tons (300,000 pounds) and can grow to be up to 98 feet long. For reference, the average car weighs about 4,000 pounds.

African elephant

African elephant
Bildagentur Zoonar GmbH/

The biggest land mammal is the African bush or savanna elephant. The African bush elephant can weigh an average of 13,000 pounds and grow to be up to 13 feet in height.

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