Biology

Eczema affects almost 32 million people in the United States.

Here's What Can Cause Itchiness, According to New Research

Scientists discovered a connection between a bacteria linked to eczema and an itch-causing enzyme in a study of mice

After peanut butter failed to attract the giant rats, researchers turned to sesame oil.

See the First-Ever Photographs of a Rare Giant Rat That Lives Only on One Pacific Island

The elusive and critically endangered Vangunu giant rats are at least twice the size of common rats

Researchers studied African penguins in the colony at Zoomarine Italia in Rome.

African Penguins Tell Each Other Apart by Their Polka Dot Patterns

New research suggests the birds may find their mates in crowded colonies by looking at their chest plumage

San Francisco-based startup Loyal is developing drugs that aim to extend dogs' lifespans—and it could form a basis for longevity research in humans.

A New Drug That Could Extend Dogs' Lives Inches Closer to Approval

For the first time, the FDA has indicated a willingness to endorse a longevity drug

When erect, the penises of male serotine bats are seven times longer than female bats' vaginas and seven times wider than the females' vaginal openings.

This Bat Uses Its Extra Long Penis Like an Arm While Mating

Serotine bats are the first mammals known to mate without penetration, new research suggests

Green sea turtles are struggling because of climate change, habitat destruction, erosion and other threats.

Metal Pollution May Be Making More Green Sea Turtles Female

In addition to warming temperatures, new research finds contaminants might contribute to the endangered reptiles' skewed sex ratios

Around 40 percent of people experience a fainting spell at some point in their lives.

Here's What Causes Fainting, According to New Research

Scientists have discovered a pathway between the heart and brain in mice that appears to be involved during loss of consciousness

Hummingbirds' unusual flying abilities have long fascinated scientists.

Watch How Hummingbirds Fly Through Narrow Spaces

Slow-motion video revealed the birds take two different approaches: flying sideways or pinning their wings back and darting like a bullet

Cheetahs may give up their prey to a larger predator, such as a lion or leopard, if one comes along while they are eating.

Cheetahs Become More Nocturnal in Extreme Heat, Study Finds

Hunting later at night may force the big cats to surrender their prey to larger carnivores, such as lions and leopards

Some species of kingfisher hunt for fish by diving head-first into the water as quickly as 25 miles per hour.

How Kingfishers Dive Head-First Into Water Without Getting Concussions

Thanks to a new genetic analysis of 30 kingfisher species, researchers are one step closer to understanding the birds' dramatic hunting style

New research suggests rats can mentally navigate to locations they've visited before.

Rats Can Use Imagination to Navigate in Virtual Reality, Study Finds

Like humans, the rodents appear to be able to visualize walking through locations they've previously visited

Atlantic salmon spend most of their lives in the cool waters of the ocean. When they venture upstream in freshwater rivers to spawn, however, they encounter challenging warmer waters.

Engineers Create 'Air Conditioning' for Salmon With Chilled Patches of River Water

Wild Atlantic salmon can struggle with heat as they swim upstream to spawn—but artificial "thermal refuges" may help them cool off

Bison were nearly hunted to extinction but are now thriving in several national parks, including Theodore Roosevelt National Park in North Dakota.

The Ecological Benefits of Rehoming a National Park's Booming Bison Population

In Theodore Roosevelt National Park, staffers are keeping the local ecosystem in balance by sending 300 bison to Native American tribes

Gene-editing silkworms produced this spider silk.

Genetically Modified Silkworms Can Produce Spider Silk That's Stronger Than Kevlar

The sturdy, biodegradable fibers could one day be used for surgical sutures or armored vests

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

Researchers have isolated phages from zoo-dwelling lemurs, giraffes, binturongs, Visayan pigs and Guinea baboons that might help fight diabetic foot ulcers.

Viruses Found in Animal Poop May One Day Treat Diabetic Foot Ulcers, Scientists Say

Known as bacteriophages, the specialized viruses could hijack and kill drug-resistant bacteria

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

Box jellyfish are about the size of a grape.

Brainless Jellyfish Are Capable of Learning, Study Suggests

Scientists provide evidence that tiny Caribbean box jellyfish—which lack a central nervous system—can learn to navigate through mangrove roots

Sea lions breed and give birth at Point La Jolla in San Diego.

San Diego Closes Popular Beach for Seven Years to Protect Sea Lions

Visitors have been getting too close to the marine mammals—taking selfies and even harassing them—as they rear their pups

Why can't we stop anthropomorphizing our animal friends and foes?

Are Wild Animals Really Just Like Us?

A summer of news reports about orca, otter and bird “attacks” has the public wondering if trying to understand animal behavior in human terms is misguided

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