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Wildlife

Researchers often observed a family of bats roosting together in tight "cuddle balls."

These Big, Meat-Eating Bats Also Have a Cuddly Side. Rare Videos Reveal ‘Hugging,’ Playing and Sharing Food

Scientists observed a family of four spectral bats in their roost in a tree in Costa Rica, capturing an inside look at their social behavior

Mexican tetras lost their eyes in multiple ways.

These Cavefish Lost Their Eyes, but They Gained Some Pretty Nifty Traits

Mexican tetras that got swept into pitch-black caverns had no use for the energetically costly organs

The partial dire wolf skull was found in Iowa.

A Partial Dire Wolf Skull Is Headed to Auction This Month—and It Could Sell for $30,000

Collectors have a rare opportunity to bid on the remains of the fearsome creature, a large canid that went extinct around the end of the last ice age

Early whales walked on land and swam in the shallows to hunt.

Before Whales Took to the Sea, These Ten Species Walked on Land

The creatures, which ranged in size from that of a fox to more than 50 feet long, divided their time between the coast and the water

A bottlenose dolphin is seen "bow riding," or swimming just in front of a humpback whale, potentially getting a boost from the wave created by the larger mammal.

Whales and Dolphins Interact More Often Than Scientists Thought, Engaging in Mutual Play, Study Suggests

Researchers analyzed nearly 200 videos and photographs documenting interactions between the various kinds of cetaceans

Researchers dissected nearly 500 post-mortem birds from five Australian species, including the rainbow lorikeet (species pictured above).

Sex Reversal Is More Common in Birds Than Previously Thought, Suggests Study of Australian Species

Researchers find that about 5 percent of birds studied have a mismatch between genetic and physical sex—including one male bird that seems to have laid an egg

Gouldian finches, endemic to northern Australia, are among the tropical birds that may be vulnerable to extreme heat.

Tropical Birds Are Struggling to Cope With Extreme Heat, Research Suggests

A first-of-its-kind data analysis links high temperatures caused by climate change to tropical bird population declines

Several species have evolved in response to human environmental impacts.

Five Astounding Ways Humans Are Driving Animal Evolution, Including Causing Lizards to Grow Longer Legs and Leading Moth Populations to Become Darker

When people build cities and introduce invasive creatures, resident critter populations sometimes adapt

In a new study, a pink cockatoo performed 257 dance moves in sequence as researchers played a 20-minute loop of Avicii’s song "The Nights."

Think You Can Dance? Check Out These Cockatoos. Research Finds the Parrots Have 30 Moves in Their Repertoire

A new study of the birds in online videos and at an Australian zoo revealed 17 dance moves never before documented by scientists

Two adult female mountain gorillas rest with one of their infants.

Female Gorillas Form Ties That Bind, Helping Them Join New Social Groups

A new study finds that when female mountain gorillas move to a new crowd, they look for females they’ve already met

Australia’s major skink (Bellatorias frerei) has evolved to combat snake venom with the same mutation found in honey badgers, according to a new study.

Scientists Discover Australian Lizards Have Mutations to Resist Snake Venom—and One Day, That Could Help Humans

A new study looking at how skinks have evolved to block venom from reaching their muscles could guide development of new antivenoms

After seeing a picture of the stick insect on social media, the researchers spent days trying to find and collect it for further research.

Gigantic ‘Walking Stick’ Discovered in Australia Might Be the Continent’s Heaviest Insect

Scientists identified the elusive new species from a female found in a high-altitude rainforest’s canopy

The new species lives in the tropical and subtropical waters of the Atlantic, from the eastern United States down to Brazil.

Scientists Identify a New Manta Ray Species, Just the Third Known in the World

Meet Mobula yarae, a large marine creature that lives along the coast in the Atlantic Ocean

The overpass is expected to be completed in December 2025, with landscaping work to be finished in 2026.

Colorado Is Building the ‘World’s Largest’ Wildlife Overpass, Giving Elk and Other Big Creatures a Safe Path to Cross a Busy Freeway

The completed overpass will be 200 feet wide by 209 feet long, forming a bridge across six lanes of traffic that see more than 100,000 vehicles each day

Artist illustration of a pack of Borophagus secundus

What Happened to the Bone-Crushing Dogs That Once Hunted Across North America?

Before going extinct roughly two million years ago, canids known as borophagines took down and consumed much larger prey

Winter-run Chinook salmon are unique because they spawn in the summer, then migrate as adults to the Pacific Ocean in the winter.

For the First Time in Nearly a Century, Adult Winter-Run Chinook Salmon Are Swimming in California’s McCloud River

Video footage shows a female guarding her nest while several smaller males compete for positioning nearby

Boston terriers are said to be affectionate with human family members, good with children and playful.

Smithsonian Photo Contest Galleries

Celebrate Man’s Best Friend With These 15 Photographs of Good Dogs

Delight in dogs with snapshots from the Smithsonian Magazine Photo Contest

A river otter 

From Playful Otters to Pint-Size Owls, These Eight Awesome Animals Call the Chesapeake Bay Home

Blue crabs, bluebirds, beetles and many more creatures can be spotted in and around the bay—and scientists at the Smithsonian Environmental Research Center are paying attention

Scientists filmed the way killer whales hunt together. These images show one of the animals turning toward the other after a tail slap delivers a shock to herring.

Killer Whales Hunt Fish in Highly Coordinated Pairs and Perfect Their Movements With Practice, Drone Videos Reveal

Footage taken off the coast of Norway reveals that orcas team up to maximize their prey, according to a new study

Ziggy (dog) and Rozi (cheetah) play with a stuffed animal at the Taronga Western Plains Zoo Dubbo in Australia.

A Lonely Cheetah Cub at an Australian Zoo Now Has an Unlikely ‘Best Friend’—a Puppy

While the companionship might seem surprising, zoos have been pairing sibling-less cheetah cubs with dogs for decades to improve their socialization

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