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Collection

Smallest Animals

The smallest animals in our catalog, ranked by maximum weight.

Total Species
12
Endangered or Worse
2
Most Popular
Clownfish
A photo of Honeybee (Apis mellifera)
Least Concern

Honeybee

Apis mellifera

Insect

The honeybee is a highly social insect essential to global agriculture, pollinating a huge share of the crops humans depend on while producing honey and wax.

A photo of Monarch Butterfly (Danaus plexippus)
Endangered

Monarch Butterfly

Danaus plexippus

Insect

The monarch butterfly is famous for an extraordinary multi-generational migration spanning thousands of kilometers between Canada, the United States, and central Mexico.

A photo of Golden Poison Frog (Phyllobates terribilis)
Endangered

Golden Poison Frog

Phyllobates terribilis

Amphibian

The golden poison frog is widely regarded as the most toxic animal on Earth by weight, native to a small stretch of Colombian rainforest.

A photo of Common Vampire Bat (Desmodus rotundus)
Least Concern

Common Vampire Bat

Desmodus rotundus

Mammal

The common vampire bat is one of only three bat species that feeds exclusively on blood, mainly targeting livestock across Latin America under cover of darkness.

A photo of Common Quail (Coturnix coturnix)
Least Concern

Common Quail

Coturnix coturnix

Bird

The common quail is a small, secretive ground-dwelling bird that migrates annually between Europe, Africa, and Asia, more often heard than seen in dense grassland.

A photo of Clownfish (Amphiprion ocellaris)
Least Concern

Clownfish

Amphiprion ocellaris

Fish

The clownfish is a small, brightly-colored reef fish famous for its symbiotic relationship with sea anemones, whose stinging tentacles it is immune to.

A photo of Moon Jellyfish (Aurelia aurita)
Least Concern

Moon Jellyfish

Aurelia aurita

Marine Animal

The moon jellyfish is one of the most common and widely-distributed jellyfish species, drifting through coastal waters worldwide in large seasonal blooms.

A photo of Xerus (African Ground Squirrel) (Xerus inauris)
Least Concern

Xerus (African Ground Squirrel)

Xerus inauris

Mammal

The Cape ground squirrel, or xerus, is a burrowing rodent of southern Africa's arid plains, easily recognized by holding its bushy tail overhead like a built-in parasol.

A photo of Toco Toucan (Ramphastos toco)
Least Concern

Toco Toucan

Ramphastos toco

Bird

The toco toucan is the largest toucan species, instantly recognizable by its enormous bright orange bill, native to the forests and savannas of South America.

A photo of Fennec Fox (Vulpes zerda)
Least Concern

Fennec Fox

Vulpes zerda

Mammal

The fennec fox is the smallest fox species in the world, adapted to the extreme heat of the Sahara Desert with famously oversized ears.

A photo of Turkey Vulture (Cathartes aura)
Least Concern

Turkey Vulture

Cathartes aura

Bird

The turkey vulture is a widespread scavenger found across the Americas, playing a critical ecological role by cleaning up carrion using one of the keenest senses of smell in the bird world.

A photo of Emerald Tree Boa (Corallus caninus)
Least Concern

Emerald Tree Boa

Corallus caninus

Reptile

The emerald tree boa is a non-venomous constrictor found in the rainforest canopy of the Amazon basin, spending nearly its entire life coiled in trees.

Smallest Animals FAQs

How many smallest animals are listed here?

This page currently features 12 species, and more are added regularly as the dataset grows.

What is the most popular animal in this list?

Clownfish is currently the most popular animal in Smallest Animals.

Are any of these animals endangered?

Yes — 2 of the 12 species listed are classified as vulnerable, endangered, or critically endangered.

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