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Weird Animals

A 2007 illustration of Arthropleura, the largest known arthropod, which grew nearly as large as a car. New research suggests previous visualizations of the animal's head were incorrect.

Fossils Reveal the Face of an Extinct Nine-Foot-Long ‘Millipede,’ the Largest Arthropod to Ever Live

Scientists in France solved the evolutionary mystery of this prehistoric monster, which resembles both the centipedes and millipedes of today

Oregon residents spotted a rare Arctic fox, which does not live in the region. Now, the animal is receiving care at a wildlife rehabilitation hospital.

Experts Don’t Know How This Mysterious White Fox Ended Up in Oregon, More Than 1,000 Miles Away From Home

Identified as an Arctic fox, the animal is believed to have been kept in captivity far from its native habitat in the tundra. Now, it’s receiving care from wildlife officials

Two comb jellies have fused together and are being probed by a pipette.

These Frankenstein-Like Sea Creatures Can Actually Fuse Their Bodies Together

Two comb jellies can merge their digestive and nervous systems and even sync their bodily functions, according to new research. The discovery could have implications for human medicine

A green-crowned brilliant hummingbird feeds on a cactus flower in Costa Rica. 

Uncovering the Secrets Behind Hummingbirds’ Extreme Lifestyle

Here’s how the aerial acrobats are able to survive on a nearly all-sugar diet, fly higher than many helicopters can and migrate over the open ocean

Some species of sea robins, such as Prionotus carolinus, use their leg-like appendages to dig out and taste prey beneath the sand. 

These Fish Have Legs—and They Can Use Them to Taste Prey

Sea robins have “the body of a fish, the wings of a bird and multiple legs like a crab”

Jellyfish are among the planet’s simplest creatures, made up of about 95 percent water and lacking brains, spines, blood or hearts.

Smithsonian Photo Contest Galleries

Delight in These 15 Photos That Capture the Exotic Undersea Lives of Jellyfish

Despite their often dangerous stings, these creatures create serene scenes as they float through the deep sea

The Australasian narrow-nosed spookfish (Harriotta avia) has a long snout and a whip-like tail.

Scientists Discover a New Species of Elusive Ghost Shark

Called the Australasian narrow-nosed spookfish, the cryptic species lives deep in the ocean off the coasts of New Zealand and Australia

Moo Deng, born this summer, with her mother Jona at Khao Kheow Open Zoo in Thailand.

Trending Today

‘Adorable’ Baby Hippo Moo Deng Is More Than a Viral Sensation. She Offers a Rare Glimpse of an Endangered Species

The baby pygmy hippopotamus in a Thailand zoo has taken the internet by storm, and keepers hope she will help gain momentum for conservation efforts

The youngster appears healthy, with a "smooth consistent coat and no obvious signs of injury," according to the Australian Wildlife Conservancy.

See Rare Footage of a Young Wombat Caught on a Wildlife Camera in Australia

Just 400 northern hairy-nosed wombats remain in the wild, and conservationists say the new videos signal the critically endangered species’ breeding success

The South American lungfish (Lepidosiren paradoxa) has the largest known genome of the animal kingdom at 91 billion base pairs of DNA.

The World’s Largest Animal Genome Belongs to an Odd, Air-Breathing Fish

Scientists sequenced the 91 billion base pairs in the South American lungfish’s genome, setting a record and revealing insights into vertebrate evolution

An artist's reconstruction of the two tardigrade species found preserved in a pebble-sized piece of amber in Canada.

Rare Fossils Give Clues to How Tardigrades Survived Mass Extinctions by Hitting the Snooze Button

Scientists have only four known tardigrade fossils, which preserve insights into how the hardy critters evolved their hibernation-like superpower of cryptobiosis

The cotton candy lobster caught by Joseph Kramer.

Rare 1-in-100-Million ‘Cotton Candy’ Lobster Found off the Coast of New Hampshire

A rare genetic mutation gives the crustacean its unique hues but also makes it more vulnerable to predators

A jar containing Ascaris, a parasitic worm that affects over one billion people worldwide

Parasites Are Everywhere. Why Do So Few Researchers Study Them?

Aging parasitologists are working hard to inspire more students to enter the field

An illustration of the taco-shaped Odaraia, which researchers say likely swam upside-down and trapped prey in its spine-covered legs.

Taco-Shaped Creature Had a ‘Major Edge’ in Evolution—and 30 Pairs of Spiny Legs

This shrimp-like arthropod was among the first to have a mandible, and it used a complex feeding mechanism during the Cambrian explosion, according to a new study

For some animals, romance goes more smoothly when it comes with gifts.

When It Comes to Romantic Gift-Giving, Humans Aren’t Alone. Snails, Birds and Flies All Woo Each Other With Presents

Throughout the animal kingdom, sweethearts bestow offerings with their amorous advances

Mai Fahmy captured videos of leeches jumping during two separate trips to Madagascar.

Watch Blood-Sucking Leeches Leap From Leaves and Soar Through the Air

New videos may help settle scientists’ long-standing debate over whether leeches can jump

While scientists have seen colossal squid before—like this specimen examined by New Zealander researchers in 2014—their interactions have always been with animals that were either pulled from the depths, washed up on shore or otherwise removed from their natural habitat.

Is This the First Recorded Footage of a Colossal Squid Living Freely?

The only sightings of the animals so far have come from corpses or creatures dragged up from the depths

Newly examined fossils suggest monotremes—egg-laying mammals—were once much more abundant in Australia than they are today.

Meet the ‘Echidnapus,’ an Extinct Creature That Resembles Both the Echidna and Platypus of Today

The species is among three newly identified monotremes, or egg-laying mammals, discovered from fossils in Australia that are shedding light on the odd animals’ evolution

The behemoth carcass has attracted lots of curious onlookers to Gearhart Beach.

See the Rare, 2,000-Pound Hoodwinker Sunfish That Washed Ashore in Oregon

The species was only described in 2017 after “hiding in plain sight” for nearly three centuries

Monarchs, some frogs and other animals feed on toxic plants or bugs for protection

A Poisonous Diet Gives These Animals Their Own Toxic Defense

From monarchs to sea slugs, various creatures consume chemicals that keep predators at bay

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