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Mammals

A spotted skunk does a handstand.

Scientists Identify Seven Species of Spotted Skunks, and They All Do Handstands Before They Spray

Researchers analyzed hundreds of spotted skunk specimens to classify the animals

An adult male woolly mammoth navigates a mountain pass 17,100 years ago.

Beyond Dinosaurs: The Secrets of Earth's Past

Woolly Mammoths Roamed Far and Wide Just Like Living Elephants

A new analysis of a mammoth tusk tracks the movements of an Ice Age icon

An adult male transient or Bigg's killer whale.

Stranded Killer Whale Survives With the Help of Humans

The whale was spotted stuck among the rocks of an island in Southeast Alaska, but after about six hours on dry land the whale was able to swim off

The ancient mammal Gobioconodon (right) squabbles with a therian mammal over a meal in the Late Cretaceous.

Other Mammals, Not Dinosaurs, Kept Our Ancestors Down

The asteroid impact that ended the Cretaceous gave our mammalian ancestors, the therians, an edge over their mammalian competitors

New research finds that sea otters have extremely high metabolisms for their size to keep warm in the cold ocean waters they inhabit.

New Research

With This Metabolic Trick, Sea Otters Stay Warm Without Shivering

Researchers find that the metabolisms of these marine mammals go into overdrive to create heat in cool waters

Mice pups were borne out of freeze-dried mice sperm that had been stored on the International Space Station for up to six years. Some of those mice and their offspring are pictured here.

After a Six-Year Sojourn in Space, Freeze-Dried Mice Sperm Produce Healthy Pups

Scientists say the finding supports the idea that genetic material can be shipped to other worlds to help establish a diversity of life

After analyzing the mitochondrial genome, the team discovered that the island-dwelling elephant is the descendant of straight-tusked elephants and was possibly isolated on Sicily between 50,000 and 175,500 years ago.

Ancient Elephants the Size of Shetland Ponies Once Roamed Sicily

The animals’ size reduction is comparable to if humans were to shrink down to the size of a rhesus monkey

A giant replica of the Aedes mosquito, a known vector for the disease yellow fever, has been waiting for visitors to return the National Museum of Natural History’s “Outbreak: Epidemics in a Connected World” exhibit.

Smithsonian Voices

Don’t Miss These Objects When the Smithsonian’s Natural History Museum Reopens

See everything from a giant replica of a mosquito, to an Allosaurus fossil, to a pink fairy armadillo when the museum opens June 18

A Florida manatee swimming near the surface.

Florida’s Manatees Are Dying at an Alarming Rate

Experts say starvation appears to be the main cause of death. Polluted waters are likely smothering the manatees’ favorite food: seagrass

The Irish elk, or Megaloceros giganteus, ranged across northern Eurasia from Siberia to Ireland and shed its giant antlers every year. It is on display in the David H. Koch Hall of Fossils—Deep Time at the Smithsonian’s National Museum of Natural History.

Beyond Dinosaurs: The Secrets of Earth's Past

Biggest. Antlers. Ever. Meet the Irish Elk

On view at the Smithsonian’s Natural History Museum, this specimen of the extinct species unlocks an evolutionary mystery

When suburbanites want to limit the number of deer in their area, it can be easier said than done.

How Can Suburbs Control Deer Populations? And More Questions From Our Readers

You’ve got questions. We’ve got experts

Newhaven Wildlife Sanctuary, where Aboriginal Warlpiri ranger Christine Ellis hunts feral cats to help protect native species

Australia’s Cats Kill Two Billion Animals Annually. Here’s How the Government Is Responding to the Crisis

A new report from the federal parliament recommends cat registration, nighttime curfews and spaying and neutering

Steppe mammoths evolved shaggy coats over a million years ago, a trait inherited by woolly mammoths.

Oldest DNA Sequenced Yet Comes From Million-Year-Old Mammoths

Genetic material from three ancient molars reveals secrets of about how the Ice Age elephants evolved

The Hopkins’ rose nudibranch is a carnivorous sea slug that obtains its trademark color from eating pink moss animals.

14 Fun Facts About Bright Pink Animals

From jellyfish to millipedes, the rosy hues make rare but exciting appearances in nature

A manatee seen underwater. These slow-moving, sea grass-munching marine mammals are incredibly docile, which leaves them vulnerable to harassment and boat propellers.

Florida Manatee Found With ‘Trump’ Written on Its Back

The threatened species faces other serious threats, including boat collisions, habitat loss and toxic algae blooms

Researchers say some of this woolly rhino's internal organs may still be preserved.

Melting Russian Permafrost Yields New Woolly Rhino Specimen

Russian researchers say this may be the best-preserved woolly rhino ever found

Taxidermied bare-nosed wombats glowing under a black light at the Western Australia Museum.

Wombats and Tasmanian Devils Glow Under Ultraviolet Light

Preliminary experiments suggest even more species of mammals may possess the UV glow

A male bottlenose dolphin used in the study, seen here with electrocardiogram suction cups attached to monitor its heart rate.

New Research

Dolphins May Be Able to Control Their Heart Rates

New study finds trained dolphins slow their hearts faster and more dramatically when instructed to perform long dives than short ones

The planets in our solar system all orbit the Sun in one shared plane.

Ask Smithsonian

Why Do the Planets All Orbit the Sun in the Same Plane?

You’ve got questions. We’ve got experts

An artist's rendering of the 250-million-year-old animal Lystrosaurus in a hibernation-like state.

Hibernation May Be a 250-Million-Year-Old Survival Trick

Paleontologists studying this strange creature’s tusks say they’ve found evidence the animal slowed its metabolism during hard times

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