Mammals

Beluga whales are one of five species of whale that undergo menopause. The new study finds that females in these five species live decades longer than females of similarly sized species.

Whales That Go Through Menopause Live Longer and May Help Care for Grandchildren

Alongside humans, five species of toothed whales are known to experience menopause. A new study suggests they evolved the trait to increase their lifespan

For rabbits and hares, females typically weigh more than males, according to a new study.

For Most Mammal Species, Males Actually Aren't Larger Than Females, Study Finds

New research upends a long-held theory that male mammals tend to be bigger than their female counterparts

Asian elephants were observed burying calves between 3 months and 1 year old that had died after experiencing infections and malnutrition.

Asian Elephants Bury Their Dead, New Research Suggests

In India, five dead calves were found buried on their backs in irrigation ditches, with evidence that multiple herd members had participated in the burials

Some researchers say that "bringing back" woolly mammoths could help protect frozen tundras by slowing the melting of permafrost.

Scientists Grow Elephant Stem Cells in Key Step Toward Woolly Mammoth 'De-Extinction'

The team's lofty goal of "resurrection" is still far from reality, but scientists say the advancement in understanding cells could help with elephant conservation

The gray whale was spotted during an aerial survey on March 1, about 30 miles off the coast of Nantucket.

A Rare Gray Whale, Believed Extinct in the Atlantic for 200 Years, Has Been Spotted off New England

Scientists say a lack of Arctic sea ice due to climate change could have created a passageway for the mammal to travel from the Pacific Ocean

Maui-based photographers Lyle Krannichfeld and Brandi Romano spent about 30 minutes observing and photographing two male humpback whales on January 19, 2022.

These Photos Are the First to Show Humpback Whales Mating—and Both Are Males

Photographers spotted the interaction in the Pacific Ocean off the coast of Maui in 2022

An orca hunting sea lion pups on an Argentinian beach in 2006. Before the recent study, killer whales had only been observed hunting white sharks in groups.

Single Orca Spotted Killing a Great White Shark for the First Time Ever

In less than two minutes, the marine mammal attacked a juvenile white shark and ripped out its liver in an encounter off the coast of South Africa last year

Without enough food, humpback whales become thinner, more susceptible to disease and less likely to reproduce.

7,000 Humpback Whales May Have Starved to Death During the 'Blob' Heatwave

The unprecedented marine heat between 2013 and 2016 in the North Pacific likely drove the whales' 20 percent decline, a trend revealed by citizen science observations

An adult humpback whale and calf. In the new study, the researchers blew air into the larynxes of three deceased whales, including a humpback, to learn how the the organ makes sound.

Scientists Discover How Some Whales Can Sing While Holding Their Breath Underwater

Baleen whales have evolved unique voice boxes essential for song, a new study finds—but these low-frequency vocalizations must compete with the noise of humans' ships

Northern gannets plunge into the water to hunt in Shetland. This image won the British Waters Wide Angle category.

See 15 Otherworldly Images From the Underwater Photographer of the Year Awards

A hunting monkey, 'kissing' scorpionfish and playful dolphins feature in just a few of the 130 striking photographs distinguished with honors in the competition

The world's oldest living wild platypus (not pictured) is nearly 24 years old.

The World's Oldest Wild Platypus Shocks Scientists at 24 Years of Age

The animal was tagged in 2000, when it was estimated to be about one year old, and re-discovered alive in the wild last year

In a study of great apes' playful antics, chimpanzees seemed to enjoy slapping adults, especially those that were dozing off.

Great Apes Love to Tease, Poke and Pester, Suggesting the Urge to Annoy Is Millions of Years Old

The desire to get a rise out of others is a 13-million-year-old trait humans and great apes share with a common ancestor, new research suggests

A mother humpback whale and calf are seen off the coast of Brazil.

Earth’s Migratory Animals Are in Peril, According to U.N. Report

The Convention on Migratory Species warns that many birds, mammals and fish face numerous threats, but they can be saved

A dugong, also known as a sea cow, in a protected marine reserve in the Philippines. On the mammal’s underside, remora fish snack on parasites—and dugong poop.

The Dugong, a Huggable, Seagrass-Loving Sea Cow, Has a New Best Friend: Drones

Keeping tabs on the species' populations is surprisingly hard. A new aerial effort tracks the marks they leave behind

A sea otter basks in the water with some kelp. Sea otter populations plummeted as they were killed for their pelts in the 18th and 19th centuries.

Hungry Sea Otters Help Prevent Erosion on California's Coast

The marine mammals, which were once hunted nearly to extinction, feed on crabs that would make the land more susceptible to erosion by digging holes in the soil and eating roots

Captured mid-hop, the floppy feet of a white hare were indeed good luck for this photographer.

Celebrate Winter in the Wild With 15 Photos of Animals Enjoying the Snow

These chilly but cute creatures will remind you what’s so wonderful about winter

A record number of manatees gather in a warm spring in Florida's Blue Spring State Park on January 21, 2024.

Nearly 1,000 Manatees Converge on Florida State Park to Keep Warm in Record-Breaking Sighting

The park's naturally heated waters drew unprecedented numbers of the marine mammals, which are especially vulnerable to the cold

Female northern white rhinos Najin and Fatu are the last of their species and reside at the Ol Pejeta Conservancy in Kenya.

World's First IVF Rhino Pregnancy Could Save a Nearly Extinct Subspecies

Only two northern white rhinos remain, but the new reproductive breakthrough may pull them back from the brink of erasure

The American mink, native to North America, is a semiaquatic mustelid that is often farmed for its fur.

Traps Scented Like Mink Butts Could Be Key to Removing the Invasive Species From the U.K.

A successful eradication trial in East Anglia has raised biologists' hopes for ridding Great Britain of the destructive creatures, which threaten native wildlife

An artist's impression of Gigantopithecus blacki near a forest in southern China.

What Caused the Mysterious Extinction of 'Giganto,' the World's Largest Ape?

The massive primates were unable to shift their diet to keep pace with a changing climate, according to a new study, forcing them to eat less nutritious bark and twigs

Page 2 of 29