Animals

From amazing firsts on Mars to the impacts of climate change on Earth, these science stories stood out as the most important of 2021

The Ten Most Significant Science Stories of 2021

Thrilling discoveries, hurdles in the fight against Covid and advancements in space exploration defined the past year

Smithsonian's most-read stories of 2021 included an explainer on crocodile evolution, a profile of a teen inventor and a feature on Viking explorer Gudrid the Far Traveler.

Our Top Ten Stories of 2021

From archaeological finds to an invasive weed to Roman bathrooms, these were our most-read articles of the year

A humpback whale and her calf swim underwater. A recent study in Nature found whales eat and poop way more than previously thought—and that feces plays an important role in fertilizing the ocean.

The Top Ten Ocean Stories of 2021

From the discovery of a large bioluminescent shark to the use of an innovative drone to study hurricanes, these are the best marine stories of the year

New research suggests Celtic people—and their sheep—arrived on the Faroe Islands more than 300 years before the Vikings.

Ancient Sheep Poop Tells the Tale of the Faroe Islands' First Inhabitants

New analysis suggests the Celts arrived on the archipelago hundreds of years before the Vikings

The pale millipede E. persephone is roughly three and a half inches long and a millimeter wide.

Finally, a Millipede That Actually Has 1,000 Legs

The title is often a misnomer, with many species falling hundreds of appendages short of a thousand. With 1,306 feet, this new insect lives up to its name

Unearthed in Norway, this crowned figure with a falcon on its right arm dates to the 13th century, and may be the oldest depiction of falconry discovered in Scandinavia.

One of the Oldest Depictions of Falconry in Scandinavia Is Discovered

The 800-year-old carved figure holding a falcon was found at a dig site in Norway

A 1918 photo of a Christmas tree for horses in Washington, D.C.

When Humane Societies Threw Christmas Parties for Horses

Held across the U.S. in the early 20th century, the events sought to raise awareness for poor living conditions and offer the animals a holiday respite

The hydra’s unusual ability to regenerate parts of its body makes the creatures biologically immortal. 

How Tiny, 'Immortal' Hydras Regrow Their Lost Heads

A new analysis pinpoints different genes behind the tiny animal's ability to regenerate body parts

Frozen DNA evidence trapped in soil suggests that mammoth and wild horse populations petered out slowly, instead of vanishing quickly.

Mammoth and Horse DNA Left in Freezer Rewrite Ice Age Extinctions

New research reveals the ancient animals survived some 8,000 years later than previously thought

Human-caused pollution is killing the seagrass that manatees feed on.

Florida Wildlife Officials Move to Feed Starving Manatees in Experimental Conservation Approach

The unprecedented feeding plan comes as more than 1,000 manatees—about 15 percent of the state’s total population—have died this year

A squid swims in the dark waters of the Mediterranean. Billions of aquatic animals, from krill to squid, travel to surface waters each night, a migration that scientists are only beginning to fully grasp.

What Drives Aquatic Animals to Make Vertical Migrations?

Researchers are trying to shed light on what leads many water dwellers—from plankton to large fish—to commute daily from the depths to the surface

While the material is mushroom-based, MycoWorks creates its rigid patented material by engineering mycelium cells as they grow into 3-D structures that intertwine themselves so densely, it makes a tough material, dubbed Fine Mycelium. The material has the strength, durability, and performance as traditional leather.    

This Mushroom-Based Leather Could Be the Next Sustainable Fashion Material

Currently marketed as a luxury fabric, Fine Mycelium is carbon-neutral and can be grown to order

Plastic makes up 80 percent of all marine debris found, from surface waters to deep-sea sediments 

The Great Pacific Garbage Patch Hosts Life in the Open Ocean

Coastal plants and animals are thriving on the plastic debris, posing potential ecological risks

Four different audio recorders placed in different regions of the north-western Arctic collected eight years' worth of acoustic data, providing a sneak peek into the lives of cetaceans.

As Arctic Sea Ice Retreats, Orcas Are on the Move, Spurring Changes in the Food Chain

Acoustic recordings reveal the marine behemoths are moving into once icy areas, which causes competition for resources with other species

Cat owners can keep themselves, their pets, and wildlife safe by keeping their feline indoors.

Outdoor Pet Cats Are Spreading a Brain Parasite to Wildlife

It is one of the most common parasites in the world and has infected approximately one-third of people globally, including some 40 million Americans

Until recently, scientists knew relatively little about the lives of birds on the open North Atlantic. But a group of researchers has identified a habitat in the ocean teeming with great shearwaters and other seabirds.

Regulators Look to Protect a Seabird Hotspot in the Middle of the Atlantic Ocean

Scientists have identified a key seabird feeding ground in need of safeguarding

Jan Piecha earned a spot as a finalist with their picture of three young raccoons, titled "Secrets." 

Ten Hilarious Winners of the Comedy Wildlife Photography Awards

The annual contest is a joyful celebration of the natural world

An arena consisting of a plexiglass box, infrared lights and cameras captured the spiders' delicate movements.

Using Night Vision and A.I., Scientists Recorded Spiders' Entire Choreography for Web Building

This research could shed light on how the circuits in our own minds work since animal brains are built out of the 'same fundamental building blocks'

This composite photograph shows the bison herd with one of the newly discovered petroglyphs overlaid on the sky.

Bison in Canada Discover Ancient Petroglyphs, Fulfilling an Indigenous Prophecy

Reintroduced to Wanuskewin Heritage Park in 2019, the animals' hooves uncovered four 1,000-year-old rock carvings

Researchers looked for eight specific neurological and behavioral criteria that indicate sentience, such as the ability to learn and feel pain.

Lobsters, Crabs and Octopuses Will Now Receive Welfare Protection as 'Sentient Beings' in the U.K.

The report outlines recommendations for best practices to reduce animal cruelty and suffering

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