Animals

Researchers mapped all 139,255 neurons in the brain of an adult fruit fly, which are linked by more than 50 million synapses.

Scientists Unveil the First-Ever Complete Map of an Adult Fruit Fly's Brain, Captured in Stunning Detail

The brain diagram, called a connectome, could revolutionize researchers' understanding of the human brain, which has many parallels with a fruit fly's

John Kunst (left), Ambassador Robert Neumann (center) and David Kunst (right) in Kabul, Afghanistan, on September 30, 1972

Why a Minnesota Man Walked Around the World, Traversing 13 Countries and 14,450 Miles in Four Years

Fifty years ago, on October 5, 1974, David Kunst completed the first verified circumnavigation of the globe on foot. Along the way, he met Princess Grace of Monaco, raised money for UNICEF and lost a brother to bandits

The Marco Polo sheep is a subspecies of argali, the largest living wild sheep.

Montana Rancher Who Created Giant, Hybrid Sheep Sentenced to Six Months in Prison

Arthur “Jack” Schubarth cloned illegally imported genetic material from the Marco Polo argali to create hybrid sheep that would draw higher prices from hunting preserves

A worker of the fungus-farming ant species Mycetophylax asper, collected in Santa Catarina, Brazil, in 2014, on its fungus garden

Ants Farmed Fungi in the Wake of Dinosaurs’ Demise 66 Million Years Ago

A new study from Smithsonian scientists analyzes ant and fungus species, and uncovers the origins of their close partnership

480 Otis, a beloved brown bear made popular by the Explore.org bear cams of Alaska’s Katmai National Park and Preserve, hunts for salmon at a popular bear fishing spot known as “the jacuzzi” on July 20, 2014.

The Chonky Superstar of Fat Bear Week Is Missing, and the Competition Won't Be the Same Without Him

While other bears battled over fish in a prime spot, Otis would sit off to the side and wait for the fish to come to him. But so far this year, he hasn’t been spotted in Katmai National Park and Preserve

A new study suggests that coyotes, like the ones seen here, have the same face muscle as dogs that's used to make pleading "puppy eyes."

Coyotes Might Make 'Puppy Eyes,' Suggesting the Facial Expression Evolved for More Than Just Cuteness

The wild canines have the same muscles used by domestic dogs to create the wide-eyed, pleading look that captures humans' hearts

Scientists observed two bowhead whales synchronizing dive schedules whenever they were within earshot of each other.

How Did Two Bowhead Whales That Were 60 Miles Apart Sync Their Diving?

Researchers suspect the marine mammals may have been communicating across the vast distance

A biologist holds a Bethany Beach firefly, found on a survey in 2019. The dwindling species is now being considered for protection under the Endangered Species Act.

This Green-Flashing Firefly Could Become the First Ever Listed as Endangered in the U.S.

The Fish and Wildlife Service will consider granting federal protections to the Bethany Beach firefly, which is rapidly losing its coastal habitat to development and climate change

Orcas are the oceans’ apex predator, even outranking the great white shark, but their hunting behaviors are still not fully understood by scientists.

Rare Drone Footage Captures Orcas Feeding on Dusky Dolphins

The predatory pod hunts off the coast of Chile and is led by a matriarch called Dakota

A wildfire burns in Quebec, Canada, in June of last year. Smoke from the fires drifted south to the United States.

Is Wildfire Smoke Causing Birds to Tend to Empty Nests?

New studies suggest smoke from western megafires may be damaging bird health and leading to strange behavior

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.

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

Pesto's fame took off after the aquarium threw him a gender reveal party earlier this month.

Meet Pesto, the Biggest Baby Penguin This Australian Aquarium Has Ever Seen

Most adult king penguins weigh between 31 and 37 pounds. At nine months old, a 51.8-pound Pesto is already looming over his parents

An illustration of night parrots by Elizabeth Gould, completed in 1890.

Rare and Elusive Australian Bird, Once Thought Extinct for 100 Years, Discovered by Indigenous Rangers and Scientists

Using sound recordings, the team identified the largest known population of the night parrot, a secretive species known as the "Holy Grail of birdwatching"

A rarely seen whiplash squid swims more than 3,500 feet below the surface of the Pacific Ocean.

See Ten Strange and Mesmerizing Creatures From the Deep Ocean, From Sea Toads to Frilled Sharks

Scientists who explore the depths using submersibles continue to discover amazing animals that inhabit dark waters

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

A Bryde’s whale photographed in the Mariana Archipelago

Mysterious 'Mechanical-Sounding' Noise Near the Mariana Trench May Now Have an Explanation

An acoustic survey in 2018 and new analysis with A.I. suggest the sounds are vocalizations from the elusive Bryde’s whale

A team of scientists in the Red Sea captured footage of a big blue octopus hunting with other fish species.

Watch Octopuses Team Up With Fish to Hunt—and Punch Those That Don't Contribute

The collaboration across species reveals a surprising social behavior of octopuses, researchers say

An artist imagines what Globidens alabamaensis would have looked like when present-day Texas was still submerged.

Rare Jaw Fossils Discovered in Texas Shed Light on a 20-Foot-Long Mosasaur

Unearthed last year, the remains could reveal new information on the extinct sea reptile, which crushed mollusks and shelled creatures with its large, round teeth

A fledgling peregrine falcon practices hunting with a butterfly.

See Ten Striking Images From the Bird Photographer of the Year Awards

The annual contest unveiled its winners, highlighting avian photos that focus on conservation issues, the beauty of birds and their sometimes hilarious behavior

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