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Mammals

Scientists analyzed more than 20 years of data on 164 wild mountain gorillas living in Volcanoes National Park in Rwanda.

For Mountain Gorillas, Being Social Comes With Both Benefits and Drawbacks, Study Suggests

A new analysis of wild gorillas in Rwanda indicates the effects of different social styles are dependent on context

A Yangtze finless porpoise appears to "smile" at the Baiji Dolphinarium at the Chinese Academy of Sciences.

Art Meets Science

Ancient Chinese Poems Reveal the Decline of a Critically Endangered Porpoise Over 1,400 Years

Researchers looked at poetry dating as far back as the Tang dynasty to find that the Yangtze finless porpoise’s range has decreased by 65 percent

Ronan the California sea lion sits in front of a pool at UC Santa Cruz’s Long Marine Laboratory.

This Sea Lion Can Headbang Better Than You—Watch Her Out-Perform Humans at Keeping a Beat

A new study of Ronan, a sea lion famous for her dancing skills, challenges the idea that only vocal learners can match a tempo

Eastern quolls went extinct on mainland Australia in 1963.

See Eastern Quolls Get Released on Mainland Australia in a New Bid to Re-establish the ‘Magic Little Animal’

Conservationists recently introduced 15 of the polka-dotted marsupials into a protected area of New South Wales

Human wounds take longer to heal than the wounds of other mammals, researchers find. That could be because we have fewer hair follicles, and stem cells in hair follicles help regrow skin after an injury.

Human Evolution Traded Fur for Sweat Glands—and Now, Our Wounds Take Longer to Heal Than Those of Other Mammals

Even compared to chimpanzees, one of our closest relatives, humans’ scrapes and cuts tend to stick around for more than twice as long, new research suggests

Two juvenile bonobos embrace in Lola Ya Bonobo Santuary in the Democratic Republic of the Congo. New research suggests female bonobos form coalitions to gain or maintain power in their societies.

Female Bonobos Assert Their Dominance Over Males by Banding Together, New Study Suggests

Bonobos, which are among our closest living relatives, live in rare societies where females tend to outrank males, even though males are larger and stronger. Scientists compiled decades of observations to explain why

Before she went missing on Kangaroo Island, Valerie slept in bed with her human parents and enjoyed spending time indoors.

Good News

Valerie the Miniature Dachshund Has Been Rescued After Surviving for 529 Days on a Rugged Australian Island

The eight-pound pup is now decompressing after her epic adventure in the wilderness, a feat rescuers say was “just incredible”

A newly developed A.I. model is based on 40 years of vocalizations from a community of Atlantic spotted dolphins.

Google Is Training a New A.I. Model to Decode Dolphin Chatter—and Potentially Talk Back

The company says its new model, called DolphinGemma, will be made open source this summer. Researchers are also trying to train dolphins to mimic made-up names for certain objects

For the first time known to scientists, a team has documented chimps sharing alcoholic fruit.

Watch Wild Chimpanzees Share Alcoholic Fruit, a Behavior Just Captured on Video for the First Time

Though the reason behind this action is unclear, researchers suggest socially consuming alcohol may have offered evolutionary benefits to a common ancestor of both humans and chimps

Elephants at the San Diego Zoo Safari Park huddled together, facing outward, in a behavior called an "alert circle" after an earthquake hit.

Watch These Elephants Form an ‘Alert Circle’ as an Earthquake Shakes San Diego, Protecting Their Young at the Center

Footage from the San Diego Zoo Safari Park shows the large mammals huddling together around the herd’s calves

A subset of more than 1,000 neurons, representing just a snapshot of the complexity mapped within a cubic millimeter of mouse brain tissue

In a World First, Researchers Mapped Part of a Mouse’s Brain in Incredible Detail. It’s a Leap Forward for Neuroscience

The 3D brain map includes more than 200,000 cells, 523 million synapses and over two miles of axons, representing the most detailed wiring diagram of a piece of mammal brain ever constructed

Kipi, the 4-year-old female reticulated giraffe, stands roughly 12 feet tall. Her calf is roughly 6 feet tall.

No One Knew This Giraffe Was Pregnant—Until She Suddenly Gave Birth to a Healthy Baby Girl

Kipi, a 4-year-old reticulated giraffe and first-time mother, had only been at the Maryland Zoo for a few months when she surprised caretakers with her pregnancy

Researchers investigated 12th- and 13th-century manuscripts from an abbey in France that were clad in furry outer covers.

Some ‘Hairy’ Medieval Books Were Covered in Sealskin, and Researchers Don’t Know Exactly Why

Historians were surprised when analyses revealed Catholic monks used pinniped hides for the protective outer layer on some manuscripts, rather than skins from the local boars and deer

Romulus and Remus, pups that the company Colossal Biosciences says are the first dire wolves to roam the planet in several thousand years, are seen at one month old.

Have Dire Wolves, Which Went Extinct More Than 10,000 Years Ago, Really Been Brought Back to Life?

Pioneers in the science of “de-extinction,” an American company has announced the births of three pups whose genes resemble those of a species that hasn’t roamed Earth for millennia

A young bonobo female responds to group members.

There Might Be Something Human in the Way Bonobos Communicate—Their Calls Share a Key Trait With Our Language, Study Suggests

Researchers attempted to decode bonobo calls by recording their social context, then analyzed how the primates string together these vocalizations

The black and peachy-orange orca calf was seen swimming with, Sedna, a descendant of one of the Budd Inlet Six.

New Orca Calf Is a Descendant of the ‘Budd Inlet Six,’ the Last Killer Whales Captured in United States Waters in 1976

The black and slightly orange Bigg’s killer whale was spotted swimming with its mother, Sedna, in the Salish Sea

The tusks of ancient elephants came in a variety of shapes and sizes.

Ten Exceptional Ancient Elephants, From Small Swimming Creatures to Shovel-Tusked Beasts

A wide variety of the exotic animals evolved on Earth over the past 60 million years

Valerie was just a year old when she went missing on Kangaroo Island off the coast of South Australia.

This Eight-Pound Miniature Dachshund Survived 16 Months on a Rugged Australian Island. But She’s Still Evading Rescuers

Valerie the wiener dog is still on the loose, more than a year after she escaped during her parents’ vacation on Kangaroo Island

Grizzlies are starting to emerge in Yellowstone and Grand Teton national parks. They're looking for the carcasses of animals that died over the winter.

Grizzly Bears Are Emerging From Their Dens in Yellowstone, Grand Teton National Parks

Adult males are waking up from their winter hibernation—and they’re on the hunt for food

Volunteers with the Channel Islands Marine & Wildlife Institute in Santa Barbara, California, rescue a sick sea lion that's likely suffering from domoic acid poisoning.

Sea Lion Bites Surfer Amid One of the Worst Outbreaks of Domoic Acid Poisoning That California Wildlife Rescuers Can Remember

Sea lions, dolphins and birds are sick and dying because of a toxic algae bloom in Southern California—and animal care organizations are overwhelmed by the scale

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