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Rodents and Shrews

One-celled algae called diatoms are unique because their cell walls are made of transparent silica, like glass, allowing their internal patterns to be visible. Diatoms are key producers of atmospheric oxygen and uphold the aquatic food chain.

See 17 Intricate Microscope Photographs That Make the Miniature World Immense. They Won the Evident Image of the Year Contest

The sixth annual competition showcases scientific microscopic imaging, illuminating tiny parts of nature, from individual cells to arthropods, diatoms and a zebrafish brain

An illustration of an Alston’s singing mouse from the 1882 publication Biologia Centrali-Americana: Mammalia

These Singing Mice Squeak Back and Forth—and Don’t Interrupt. Scientists Found the Brain Pathway Behind Their Impressive Songs

Alston’s singing mice carry out complex vocalizations and even appear to converse politely with one another. The neural circuitry that makes this possible is simpler than researchers expected

The MV Hondius, the cruise ship facing a hantavirus outbreak, anchored off the coast of Cape Verde, an archipelagic country near West Africa

A Deadly Outbreak of Hantavirus Has Stranded a Cruise Ship in the Atlantic Ocean. Here’s What to Know About the Rare Contagion

Three people associated with the vessel have died, and health officials have identified a total of two confirmed cases and five suspected cases of the infection. The virus usually spreads via contaminated rodent droppings

The researchers studied a wetland shaped by Eurasian beavers in Switzerland.

Beavers Are Ecosystem Engineers—and They Might Be Helpful Allies in the Fight Against Human-Caused Climate Change

New research suggests that wetlands created by the industrious rodents are carbon sinks, meaning they store a lot of heat-trapping carbon dioxide—the human-produced gas largely responsible for today’s global warming

Scientists have long assumed that queen transitions in naked mole rat colonies were always chaotic and violent. But new research suggests another, more peaceful path also exists.

Naked Mole Rats Usually Duke It Out to Choose Their Next Queen. But These Unusual Rodents May Be Capable of More Peaceful Transitions of Power

In a laboratory experiment centered around a colony known as the Amigos, researchers observed a subordinate female take over reproduction without incident

Biologists with the California Department of Fish and Wildlife are working hard to eradicate nutria from the state.

Large Invasive Rodents Are Wreaking Havoc in California. New Research Suggests Someone Deliberately Introduced Them

Genetic testing revealed that nutria living in California since 2017 are most closely related to a population in central Oregon—too far for the creatures to have traveled on their own

Magawa the rat detected unexploded ordnance in Cambodia

A Small Rodent Hero Left a Giant Legacy. Now, Cambodia Honors This Famous Bomb-Sniffing Rat With a Seven-Foot Statue

Magawa the African giant pouched rat cleared more 1.5 million square feet of land mines during his five-year career, making him one of the most successful bomb-sniffing rodents in the country’s history

Rats and other rodents have front teeth that grow continuously, so they gnaw to keep them healthy and in shape. 

Rodents Don’t Gnaw Just to Trim Their Teeth—It Also Feels Good, According to a New Study

The findings could help humans who grind their teeth or clench their jaws

A polar bear cub walks along the ice in Svalbard, Norway.

See 24 Astounding Images From the Wildlife Photographer of the Year Contest—and Vote for Your Favorite

The public will choose the winner of the People’s Choice award in a vote that runs from February 4 to March 18

Naked mole-rats are unusual for their long lives and resistance to cancer. Now, researchers suggest the rodents not only tolerate but prefer to be in low-oxygen air.

Naked Mole-Rats Prefer Low-Oxygen Air That Would Kill Most Mammals, Adding to Their List of Death-Defying Superpowers

These underground rodents are the first mammals found to actively choose air with lower-than-normal oxygen levels. Their remarkable ability to survive these conditions could offer a key model for researchers studying new treatments for stroke or lung diseases in humans

Ancient bees built nests in the hollows of rodent skulls, a new study suggests

Fossils Suggest That Some Ancient Burrowing Bees Made Their Homes in Rodent Skulls

While cleaning fossils retrieved from a cave on a Caribbean island, a researcher noticed something strange in the hollow tooth socket of a small skull

A Laysan albatross checks on its egg.

Stream the Beautiful Highs and Violent Lows of Albatross Life With This New 24-Hour Camera on Midway Atoll

You can see the large white seabirds dancing, preening, feeding and raising young—though the live feed might show a dark side of island living, too, with potential predation from invasive mice

Bat? Meet rat. Scientists recorded brown rats snatching bats from the air and eating them.

Rats Are Snatching Bats Out of the Air and Eating Them—and Researchers Got It on Video

Rodents in northern Germany were spotted using two different hunting strategies at major urban bat hibernation sites

Coins left behind as offerings helped the researchers measure the size of the imprint from photos.

Chicago’s Famous ‘Rat Hole’ Wasn’t Actually Made by a Rat, According to a Statistical Analysis

Scientists are almost certain the viral imprint in a city sidewalk was actually made by an unlucky squirrel

Many rodents have nails on their thumbs and claws on the rest of their fingers. A new study suggests this trait might have been key to their world domination.

Rodents Conquered the World With the Help of Their Thumbnails, Study Suggests

The trait might have given rodents greater manual dexterity, allowing them to access new foods, such as nuts

The leaf-toed gecko has been rediscovered on Rábida Island in the Galápagos.

Small, Secretive Gecko Rediscovered in the Galápagos After Scientists Eliminate Invasive Rats

Researchers thought leaf-toed geckos were locally extinct on Rábida Island, so they were thrilled to find several of the lizards alive and well during 2019 and 2021 expeditions

Yersinia pestis, the bacteria that causes the plague

An Arizona Resident Died From the Plague. Here’s What to Know About the Rare Disease

The patient had the pneumonic plague, the rarest and deadliest form of the disease. Human cases remain very uncommon in the United States, though plague is endemic to the western part of the country

Fossilized remains of the giant beaver have been discovered in Minneapolis and Saint Paul, as well as in southern Minnesota.

Bear-Sized Giant Beavers Once Roamed North America, and They’re Now the Official State Fossil of Minnesota

The large, extinct creatures roamed the Twin Cities area more than 10,000 years ago and could grow to more than 200 pounds

Scavengers like turkey vultures remove millions of tons of waste each year by consuming carrion.

Scavenger Animals Are in Trouble, and That Could Spell Bad News for Human Health

More than one-third of species that eat some amount of carrion are threatened or declining, a new analysis finds, and that could lead to a rise in zoonotic diseases

Trail cameras recorded nocturnal subalpine woolly rats roaming around in search of plants to eat.

See the First Photos and Videos of the Rare Subalpine Woolly Rat, a Massive but Elusive Rodent in New Guinea’s Mountains

Working with local Indigenous people, biologist František Vejmělka spent six months surveying the creatures that live on Mount Wilhelm in Papua New Guinea

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