Animals

Grazer, also known as 128 Grazer, stands in a river in September 2023, after bulking up for hibernation.

Meet Grazer, the Winner of Fat Bear Week 2023

A fiercely aggressive mother and a skilled angler, the massive brown bear has been crowned this year's champion in the annual online popularity contest

With their mating season approaching, two male Nubian ibex fight for supremacy on a cliffside. The photograph won the Animals in their Environment category.

See 12 Winning Images From the Wildlife Photographer of the Year Contest

The stunning entries showcase the behaviors of ancient and elusive species, from horseshoe crabs to tapirs and orcas—as well as the threats they face

Because of their size, cats have relatively short vocal cords—so how are they able to produce such low-frequency sounds when purring?

How Do Cats Purr? Scientists May Now Have an Answer

Domestic cats produce low-frequency vocalizations when purring, an unusual ability for their small size

The Field Museum collects bodies of birds that collide with windows. The birds are processed and cleaned by the museum’s flesh-eating beetle colony.

Almost 1,000 Birds Died in One Night From Striking a Chicago Building

Another 1,000 were killed in window collisions across the downtown area, amid calls for more bird-friendly architecture and reduced light pollution

Researchers are still trying to confirm the cause of death, but they suspect the high water temperatures are to blame.

At Least 125 River Dolphins Have Died Amid Drought and Heat in Brazilian Amazon

Though the pink animals' cause of death is not confirmed, temperatures in the remote Lake Tefé reached 102 degrees Fahrenheit in late September

Jackdaws are social birds that mate for life and breed in colonies.

These Birds Will Switch Companions to Earn Food but Stick With Family, Study Suggests

Jackdaws, cognitively complex relatives of crows, have intricate social dynamics and mate for life

Mammal taxidermy under ultraviolet light: (a) polar bear, (b) southern marsupial mole, (c) greater bilby, (d) mountain zebra, (e) bare-nosed wombat, (f) six-banded armadillo, (g) orange leaf-nosed bat, (h) quenda, (i) leopard, (j) Asian palm civet.

More Mammals Can Glow in the Dark Than Previously Thought

A new study found that 125 different mammal species are fluorescent under ultraviolet light, suggesting the property is widespread

A silky anteater, small enough to sit comfortably in your palm, rests in the canopy of a mangrove forest in Brazil’s Parnaíba Delta.

This Fluffy Little Anteater May Be a New Species

The animals eke out a living in a pocket of mangroves on Brazil’s Atlantic coast

Chilobrachys natanicharum, the electric blue tarantula

See the New 'Enchanting' Electric Blue Tarantula Discovered in Thailand

Blue is one of the rarest colors in nature, but this arachnid achieves the bright hue through special structures in its hair

If you want to cut meat out of your diet but are having a hard time, a new study suggests your genetics may be responsible.

Maintaining a Vegetarian Diet Might Be in Your Genes

New research has identified three genes that are strongly linked to vegetarianism and 31 others that might also play a role in sticking to a meatless diet

The now-extinct golden toad in a 1978 picture taken in Costa Rica.

Climate Change Is Pushing Many of the World's Amphibians Closer to Extinction

Just over 40 percent of amphibian species are at risk of going extinct, and humans' fossil fuel use is partly to blame, according to a new assessment

The illegal trade of wildlife may include animals or plants, or parts of them, such as roots, stems, skin, bones or antlers.

A Look Inside Wildlife Crime Scene Investigators

Scientists are using the latest in DNA fingerprinting to combat the multibillion-dollar business of trafficking plants and animals

A killer whale in the Salish Sea is observed harassing a porpoise.

Why Do Orcas Keep Harassing Porpoises?

An endangered group of killer whales in the Pacific Northwest has been toying with porpoises for decades—and new research offers some possible explanations

Male elephant seals can weigh up to 4,400 pounds.

How This Small Nonprofit Helped Save California’s Elephant Seals

Volunteers with Friends of the Elephant Seal educate tourists to prevent conflicts, inspire awe and keep the marine mammals safe

Adult dugong swimming and feeding in the shallow water of the Red Sea. 

Dugong Populations Are Declining in the Great Barrier Reef, Study Finds

Destruction of seagrass habitats and "indiscriminate" gillnet fishing have both contributed to the marine mammals' dropping numbers, scientists say

The life cycle of the parasitic rat lungworm involves rats spreading it to snails and slugs, which pass it back to rats.

Parasitic, Invasive Worm Found in Rats in Georgia

While the worm can sicken people, few human infections have been reported in the U.S., and it typically doesn’t require treatment

Five flamingos—three adults and two juveniles—hung out for a few hours along the shore of Lake Michigan in Wisconsin. One is not pictured here.

Flamingos Spotted in Wisconsin for First Time on Record Amid String of Rare Appearances

Following Hurricane Idalia, the conspicuous pink birds have been sighted in at least 11 states where they don’t typically live

Artistic reconstruction of a group of hominins in direct competition for carrion with a hyena

One Million Years Ago, Our Human Relatives May Have Challenged Giant Hyenas for Carcasses

Groups of hominins might have successfully scavenged large kills, new modeling finds

Orcas are opportunistic feeders that will take advantage of human fishing activities to get an easy meal.

Nine Orcas Have Died in Fishing Gear Near Alaska This Year

A "new behavior" from the animals might be linked to this sudden uptick in deaths, as they have been feeding in front of fishing nets, a trade group says

A mother bear and two cubs in Katmai National Park and Preserve in Alaska.

Before Fat Bear Week, Don’t Forget the Corpulent Cubs Competing in Fat Bear Junior

The offspring of Katmai National Park’s famous brown bears will face off in a bracket all their own

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