Q:

What is the smallest animal on earth?

A:

Quick Answer

The smallest animal on earth is the tardigrade. The tardigrade is also known as the moss piglet or water bear.

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What is the smallest animal on earth?
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Full Answer

Tardigrades are identified by their segmented bodies. These animals have eight legs. Tardigrades are described as looking like chubby and short caterpillars. They are found in a variety of locations around the globe, from the highest mountains to the deepest oceans.

Tardigrades are invertebrates. An invertebrate is an animal that lacks a backbone. Invertebrates represent a wide range of animal species from spiders to starfish to jellyfish. In fact, approximately 97 percent of all animals on the planet are invertebrates.

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