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Mammals

The Punta Medanosa colony of Magellanic penguins on the coast of Argentina has nearly 8,000 breeding pairs. Other colonies number in the hundreds of thousands.

What Did Scientists Learn After Thousands of Penguins Were Slaughtered by Mountain Lions?

The thriving bird colonies likely grew over several decades because local shepherds had temporarily eliminated pumas

Weighing up to 1,100 pounds, Risso's dolphins live throughout the world's temperate and tropical oceans.

See a Rare ‘Super Pod’ of More Than 1,500 Risso’s Dolphins Spotted off the Coast of California

Whale-watching tour operators encountered the mass gathering of cetaceans while looking for migrating gray whales

A humpback whale

Humpback Whale Song Shares a Key Pattern With Human Language That Might Make It Easier for the Animals to Learn

Despite humans and whales being separated by millions of years of evolution, our vocalizations follow the same principle outlined in Zipf’s law

Doctors at NYU Langone Health recently performed a transplant surgery using a gene-edited pig kidney. The patient, Towana Looney, is now more than two months out from surgery and recovering well,

FDA Approves Transplant Trials for Gene-Edited Pig Kidneys

Two biotechnology companies will begin testing the procedures in patients suffering from kidney failure

The coast horned lizard (Phrynosoma blainvillii) depends on chaparral habitat to survive. It has declined across much of its range due to habitat loss, whether from development or invasion of non-native grasses. After fires, non-native grasses often fill in habitat and create problems for the species.

Here’s How the Los Angeles Wildfires Are Affecting Animals, From Fish to Snakes to Birds

While scientists were able to save and move some creatures in the aftermath, researchers are worried about the prospects for other species

Nyota, a 25-year-old male bonobo at Ape Initiative in Iowa, participated in the study.

When Bonobos Know What You Don’t, They’ll Tell You. It’s a Sign of a Cognitive Ability Called ‘Theory of Mind’

A first-of-its-kind study suggests bonobos, like humans, can understand someone else’s lack of knowledge—and adjust their actions accordingly

The mammoths were not all related to each other, according to the new analysis.

Mammoth Bones Used to Build Mysterious 25,000-Year-Old Site in Russia Came From Different Herds

DNA and radiocarbon dating analyses of the bones are offering new insights into the ambitious Ice Age site constructed by hunter-gatherers

A polar bear near Kaktovik, Alaska. New research reveals how polar bears keep ice off their fur.

How Do Polar Bears Keep Ice Off Their Fur? New Study Reveals the Secret—and It Could Improve Technology

The de-icing properties of polar bear sebum could fuel new innovations, scientists say, potentially unlocking alternatives to harmful “forever chemicals” used in ice-resistant coatings today

One of the first-ever images of the Mount Lyell shrew in California

See the First-Ever Photographs of the Elusive Mount Lyell Shrew, Finally Caught on Camera in California

A group of young researchers captured and photographed the animal on a three-day expedition to the Eastern Sierra Nevada

LouLou, an elephant at the Cheyenne Mountain Zoo, was one of five that the Nonhuman Rights Project claimed in a lawsuit should be able to live in a sanctuary.

Elephants Aren’t People and Can’t Sue to Leave a Zoo, Colorado’s Top Court Rules

The court rejected a case to send five African elephants to a sanctuary, saying they have no legal right to demand release under habeas corpus

Elephants, bats, rabbits and other mammals have exceptional hearing—and their outer ears may be a key reason why.

Why Do Mammals Have Outer Ears? Scientists Are Getting Closer to Solving the Mystery

Two new studies offer insights into the evolution and development of external ears, which appear in humans and other mammals but aren’t found in reptiles, birds or amphibians

A new study on "contagious urination" only looked at captive chimpanzees, but researchers suspect the phenomenon may also exist in the wild.

For Chimpanzees, Peeing May Be Contagious—Just Like Yawning Is for Humans, Study Finds

Scientists suggest captive chimpanzees engage in ‘socially contagious urination’—that is, when one primate starts peeing, others quickly follow suit

The finished national anthem included the calls of 41 birds.

How Scientists and Composers Teamed Up to Create a Stunning Natural Version of Colombia’s National Anthem

A team trekked for two weeks and collected the sounds of birds, frogs, a jaguar and whales in order to make the song

Researchers tracked 71 common noctule bats (Nyctalus noctula) to parse their migration patterns.

Bats Hitch a Ride on Storm Fronts When Migrating, Saving Energy by ‘Surfing’ Through the Sky, Study Finds

Researchers tracking female bats in central Europe found they migrated much farther in a single night than previously thought. The findings could help protect bats from wind turbine collisions

A Surinam golden-eyed tree frog calls for a mate, puffing out its cheeks.

See 25 Incredible Images From the Wildlife Photographer of the Year Contest

Cast your vote for your favorite of the photographs, which are all contenders for the People’s Choice award, through January 29

A baby pygmy hippo was born at Virginia's Metro Richmond Zoo in December in another viral birth for the endangered species.

A Virginia Zoo Now Has Its Own Moo Deng—See the ‘Adorable’ Baby Pygmy Hippo Born in December

The young female made her public debut this week, and the Metro Richmond Zoo is asking fans to vote on her name—a choice between Poppy and Hammie Mae

Though she faced many challenges—including the loss of her left eye—the gray wolf named 907F persevered and lived to be more than 11 years old.

The Iconic, One-Eyed ‘Queen of the Wolves’ Dies After Fight With Rival Pack in Yellowstone National Park

A beloved matriarch, 907F lived to be 11 years old, which is much longer than the average life span for gray wolves and a rare feat, even for those in the protected area of Yellowstone

Southern sea otters are making a comeback along the coast of California—and they're chowing down on invasive European green crabs.

Hungry Sea Otters Are Taking a Bite Out of California’s Invasive Crab Problem, New Study Finds

Researchers estimate southern sea otters eat up to 120,000 European green crabs per year at the Elkhorn Slough National Estuarine Research Reserve

One in ten southern right whales lives past the age of 131, new research suggests.

Some Whales Live Much Longer Than Previously Thought, a Discovery That Could Change How We Protect Them

In a new study, researchers use novel techniques to uncover more accurate life expectancy estimates of southern and North Atlantic right whales

The Amazon tree boa (Corallus hortulana) is not a new species, but it's one of the reptiles documented on a 2022 expedition to the Alto Mayo region of Peru.

Expedition Discovers 27 New Species in Peru, From an ‘Exceedingly Rare’ Amphibious Mouse to a Blob-Headed Fish

The hidden creatures were found in a densely populated region known for its successful—and controversial—conservation tactics

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