Mammals

The female whale was found stranded in January on a beach near Palm Coast, Florida.

How an Orca Skeleton Made Its Way From Florida to the Smithsonian

Washed up in a rare stranding event, the newly collected specimen will offer rich exploration for researchers

Moose numbers have plummeted in Minnesota.

What's Killing Minnesota's Moose? Studies Reveal Sites of Deadly Brainworm Transmission

Carried by deer and spread by snails and slugs, a lethal parasite is infecting the large ungulates, which have recently declined dramatically

Cows with the slick gene have sleek, short hair that helps keep them cool.

Farmers Are Breeding Cows to Withstand Heat Waves

A gene that occurs naturally in some cow breeds may be the key to helping cattle thrive as temperatures rise because of climate change

The rare all-brown giraffe was born in July.

See the Rare Spotless Giraffe Born at a Tennessee Zoo

The baby might be the only all-brown giraffe on the planet, as the last one on record was born in 1972

Though she appeared to be in good health just days earlier, Lolita died of a suspected renal condition.

Lolita the Orca Dies After More Than 50 Years in Captivity

Several groups were working to remove the 7,000-pound creature from the Miami Seaquarium and return her to the ocean at the time of her death

A wolf spotted in the Sequoia National Forest

New Pack of Endangered Gray Wolves Discovered in California

The pack, which consists of a mother and her four offspring, is now the state’s southernmost wolf group

The remains likely belong to a Qinling panda rather than a Sichuan panda. Pictured: Qi Zai, a Qinling panda born in captivity

Fully Intact Giant Panda Skeleton Discovered in Chinese Emperor's 2,000-Year-Old Tomb

Archaeologists previously found a panda skull in a nearby Han burial, but its torso was missing

Egyptian paleontologists Abdullah Gohar, Mohamed Sameh and Hesham Sallam are part of the study team that discovered the fossil and identified the new species of basilosaurid whale.

Fossil of Tiny, Extinct Whale Discovered in Egypt, Named for King Tut

The species was around the size of a bottlenose dolphin and thrived 41 million years ago

A sun bear at the Hangzhou Zoo in Hangzhou, Zhejiang province, China, on August 1, 2023.

Sun Bears Are Not Humans in Disguise, but They Deserve to Go Viral Anyway

Learn five reasons the ursines are so amazing, including their ten-inch-long tongues

Rats make a high-pitched sound similar to laughter when they're being tickled.

Tickling Rats Reveals a Brain Region Linked to Laughter and Play

This group of neurons could someday inform the treatment of depression and anxiety in humans, scientists say

Rice's whales were initially thought to be a subspecies of Bryde’s whales—until scientists figured out they were a distinct species.

Fishermen Spot Rare Endangered Rice's Whale in the Gulf of Mexico

Scientists say no more than 100 individuals of the species exist in the wild, placing the Rice's whale among the scarcest marine mammals in the world

Belugas head to Hudson Bay in the summer in droves to eat, molt and give birth.

Watch Tens of Thousands of Beluga Whales Migrate With These Live Streams

The marine mammals are gathering in Canada's Hudson Bay and Churchill River—and their journey is a reminder of sea ice's importance

An orca mother travels alongside her son. Older orca females past their reproductive years often lead their pods on hunts.

Aging Mother Orcas Keep Their Sons Out of Fights

In a new study, male orcas with mothers that had gone through menopause showed less tooth scarring on their fins compared to other males

A pink dolphin spotted in Louisiana.

Rare Pink Dolphins Spotted Swimming in Louisiana River

The cetaceans are likely bottlenose dolphins with albinism, and one could be "Pinky," an animal first seen in the area in 2007

The dinosaur and mammal engaged in a final tussle.

Rare Fossil May Show a Small Mammal Attacking a Dinosaur

The well-preserved bones could upend the traditional view of dinosaurs as predators and mammals as prey, if the findings are confirmed

Experts aren't sure why the otter is approaching surfers, as sea otters have a natural fear of humans.

A Surfboard-Snatching Sea Otter Is Vexing Wildlife Officials in California

While the animal's antics may look cute, the dangerous behavior could bring harm to humans or force authorities to euthanize the endangered mammal

Sightseers spotted the rarely seen creatures on a Monterey Bay Whale Watch boat tour off the coast of California.

Tourists Spot 'Incredibly Rare' Whales Off California Coast

Cuvier's beaked whales can hold their breath for hours and don't spend much time at the surface, making them mysterious—and a treat to see

A sea lion receiving care at the Pacific Marine Mammal Center in Laguna Beach, California, shows signs of domoic acid poisoning.

Algae Is Making Sea Lions More Aggressive in California

A toxin present in algal blooms is moving through the food chain, leading to the deaths of sea lions and dolphins

Dolphins and humans both change how they communicate when they're around babies.

Dolphins Use Baby Talk When Their Calves Are Around

Like humans, female dolphins make higher-pitched vocalizations when communicating with their young

A variety of saber-toothed animals have evolved to fill different niches.

Eight Menacing Saber-Toothed Creatures That Stalked the Earth Long Ago

From before the dinosaurs to the Ice Age, several mammals and their forerunners sported the iconic, curved teeth

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