Animals

Sloths' slow-paced lifestyle is a survival strategy, not a sign of laziness

Sloths Don't Just Live in Slow-Mo, They Can Put Their Metabolism On Pause

Unlike most mammals, sloths don't use vast amounts of energy when it's hot, instead opting to slow down and conserve power, more like birds or reptiles

“It is especially exciting to see Sukiri bonding with and successfully raising these cubs,” says the Zoo's cheetah biologist Adrienne Crosier.

New Cheetah Mom Earns High Marks Caring for Her Three New Smithsonian Cubs

Cubs born to Sukiri on September 22 are latest in the National Zoo’s efforts to diversify gene pool of captive born cheetahs

Mugging for the camera

World's Largest Forest Antelope Photographed in Uganda for First Time

The lowland bongo and other mammal species were recorded during the first camera trap survey of Semuliki National Park

Moths Love Sipping the Salty Tears of Sleeping Birds

A researcher in the Amazon happened up on the rare sight in the dead of night while looking for reptiles and amphibians

Urban cats are more likely to hunt down birds, mice than rats

Cats Are Surprisingly Bad at Killing Rats

Over a 79-day period, feral felines killed just two rats, instead opting to hunt less challenging prey

Bones of the newly described Vorombe titan

Newly Described Elephant Bird Is the Biggest Yet

A new study is bringing long-overdue scientific rigor to the elephant bird’s family tree

Smith spotted the elusive creature while searching for rare flowers in the Wondiwoi mountain range

Elusive Tree Kangaroo Spotted for First Time in 90 Years

An amateur botanist spotted the Wondiwoi tree kangaroo in the remote mountains of West Papua, New Guinea

The dazzling pink and yellow fish is the only member of its genus known to reside in the Atlantic rather than the Pacific

Newly Discovered Neon Fish Species Is Named After Greek Goddess of Love

Researchers were so entranced by the pink and yellow fish that they failed to spot a sixgill shark swimming just above their heads

Females that inherited two copies of a mutated gene developed antenna and claspers similar to males, rendering them unable to lay eggs or bite their prey

Gene Drive Technology Eliminates Malaria-Transmitting Mosquito Population

Researchers introduced a sterilization mutation that wiped out lab populations in seven to 11 generations

Giant pandas put it all out there when calling out for love.

Giant Panda Mating Calls Say a Lot About Them

Panda love grunts are packed with information, like size of the potential mate and more, but long distance calls are less reliable

A record 105 tons of ivory was burned in Kenya in 2016, destroying tens of millions of dollars in illegal wildlife goods.

Rhino Horn and Tiger Wine: How the Illegal Wildlife Trade Is Growing Bolder

Wildlife author and journalist Rachel Nuwer discusses her new book <i>Poached</i> about one of the world's fastest-growing contraband industries

Researchers first discovered Dickinsonia fossils back in 1946.

The World's Earliest Known Animal May Have Been a Blob-Like Undersea Creature

Traces of fat found on a 558-million-year-old fossil suggest <em>Dickinsonia</em> was an animal rather than fungus, plant or single-celled protozoa

By studying the genome of a kind of octopus not known for its friendliness toward its peers, then testing its behavioral reaction to a popular mood-altering drug called MDMA or 'ecstasy,' scientists say they have found preliminary evidence of an evolutionary link between the social behaviors of the sea creature and humans, species separated by 500 million years on the evolutionary tree.

Ecstasy Turns Antisocial Octopuses Into Lovestruck Cuddle Buddies—Just Like Us

The genetic and neurological similarities between octopuses and humans shed light on how creatures became social beings

Faced with rising floodwaters that threaten to top their 19-inch absorption limit, the open-air pits could pose a significant environmental and health hazard

Florence Fall-Out Threatens to Release Waste Stored in Dozens of North Carolina Hog Lagoons

As of noon Wednesday, the Department of Environmental Quality had identified 21 flooded lagoons actively releasing hog waste into the environment

Why Washington Mountain Goats Are Being Flown From One National Park to Another

Olympic National Park's mountain goats are moving to saltier pastures

New genetic evidence confirms that ivory poaching in Africa involves only a few powerful players who consolidate the goods for illegal trade abroad.

How DNA Testing Could Bring Down Ivory Trade’s Biggest Criminals

Genetic testing exposes three major cartels illegally trafficking ivory out of several African countries

Five Baby Squirrels Saved From Truly Knotty Predicament

Five gray tree squirrels in Wisconsin were found with their tails hopelessly knotted together, requiring some help from a wildlife rehab

Humans' CMAH gene mutation may enable them to exhibit higher endurance over long periods of exercise

Human Gene Mutation May Have Paved the Way for Long-Distance Running

Mice with engineered versions of the CMAH gene exhibited 30 percent better endurance than those without

The wolf cub is the better-preserved of the two specimens, with everything from its fur to its tail and curled upper lip still intact

Gold Miners Unearth 50,000-Year-Old Caribou Calf, Wolf Pup From Canadian Permafrost

Both animals' fur, skin and muscle are almost perfectly preserved

Washington’s National Mall, home to 11 Smithsonian museums, flooded in 2006, causing millions of dollars in damage.

How the Smithsonian Prepares for Hurricanes and Flooding

An emergency command center is ready for activation and the National Zoo could move animals into bunkers

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