Wildlife

Black turban snails are small marine snails that make tasty prey for crabs. Failed crab attacks leave scars on a snail’s shell. By analyzing the rate of scarring and the size of the snail when it was attacked, researchers can learn important details about crab populations.

Scars on Snails Offer a 100,000-Year Record of Crab Populations

A surprisingly simple technique for studying marks on shells shows how California’s crab population has changed over millennia

A snorkeler comes face to face with a humpback whale. If humans work to halt climate change, that may help prevent another mass extinction event in the oceans.

Without Action on Climate, Another Mass Extinction Event Will Likely Happen in the World's Oceans

Marine species at the poles will face increasing pressure if warming isn’t curbed

A male Philoponella prominens spider (top) mates with a female.

This Male Spider Catapults Itself Into the Air to Avoid Sexual Cannibalism

The arachnids propel themselves to safety at breakneck speeds after they’ve mated to avoid being eaten alive

As the climate changes, polar bears are increasingly coming into contact with people.

Researchers Develop a 'Bear-Dar' That Warns Humans of Approaching Polar Bears

The artificial intelligence-powered radar system is needed as climate change brings the animals closer to towns

Visible in the entrance to their den are a mother black bear, who has been sedated, and her female cub. Scientists are watching to see how bears will tweak their hibernation habits as the climate warms.

Why Amazing Discoveries About Bear Hibernation May Help Improve Human Health

The creatures' annual protracted snoozes have much to tell us about the biology of mammals, ourselves included

An artists's take on the insect

The Quest to Find the World's Largest Bee

The rediscovery of Wallace’s giant bee uncovers disheartening truths about the tenuous fate of hidden insect species

One reader wonders how birds stay balanced on tree branches while they’re asleep.   

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How Do Birds Stay Upright When They Are Sleeping?

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Bald eagles are intensely social in spite of also being fierce predators. Some 500 live near the remote fishing port of Dutch Harbor, Alaska.

Planet Positive

The Bald Eagle's Soaring Return Shows That the U.S. Can Change for the Better

The true meaning of a national symbol

Biologists of the past often explained the vast spectrum of animal genitalia with "lock-and-key": the hypothesis that vaginas and penises had primarily evolved to fit into each other mechanically. Today, there is a growing appreciation for the myriad of forces acting on genitals.

Why Have Female Animals Evolved Such Wild Genitals?

From ducks to dolphins, females have developed sex organs that help them deter undesirable suitors and derive pleasure from non-reproductive behavior

Male Svalbard walruses cluster by the shore. Each weighs an average of about 3,000 pounds and is up to ten feet long.

Planet Positive

A Welcome Comeback for Norway's Walruses

A hunting ban has fostered the return of a nearly extinct species

Lions spritzed with the hormone oxytocin stayed closer together.

Planet Positive

Can Spraying Lions With the 'Love Hormone' Help Them Live Together?

Researchers administered oxytocin to captive animals, and preliminary results showed the big cats were less hostile towards strangers

A rare sighting of a northern spring salamander on migration night. These nocturnal creatures spend their days hiding under logs and stones.

Planet Positive

Why Did the Salamander Cross the Road?

To reproduce, of course. And a band of volunteers gathers at night to help it—and countless other amphibians—get to the other side

Dried cochineal insects — shown here in the center of the photo — can be processed to create several natural dyes such as carmine and cochineal extract. These products get their red hue from carminic acid, a chemical found within the insect.

Scientists Are Making Cochineal, a Red Dye From Bugs, in the Lab

Used to color foods and cosmetics, carminic acid is traditionally 'farmed' from an insect. But researchers are moving to engineer it in microbes

A captured fisher is released after undergoing sedation and physical examination, a part of the Hoopa Valley Tribe’s longstanding efforts to monitor the culturally important species.

Inside the Hoopa Valley Tribe's Quest to Understand a Rare Carnivore

The tribe maintains some of the most detailed documentation of fishers in North America

Boas constrict their prey to death.

How Boa Constrictors Breathe While Squeezing the Life Out of Their Prey

Researchers outfitted the snakes with electrodes and scanned them using X-rays to see how the flexing predators managed to take in air

Bottlenose dolphins swim in the Moray Firth Special Area of Conservation off Scotland. The photo was taken by an aerial drone.

In a First, Scientists Use Drones to Detect Pregnant Dolphins

Researchers say the new tech will help them better understand bottlenose dolphin reproduction

A fossil of a Diegoaelurus jawbone was recovered from a construction site in Oceanside, California.

Paleontologists Uncover the Oldest Sabertoothed Predator

Fossil jaw shows earliest evidence of a specialized carnivore with scimitar-shaped fangs

Red pandas are classified as endangered and are legally protected in their home countries.

Before Seeing 'Turning Red,' Learn These Amazing Red Panda Facts

Delight your friends with these eight surprising details about the furry creatures

To better understand how hypoxia—dangerously low oxygen levels—affects crabs, researchers and fishers are working together to find a way to adjust to changing conditions in the northeast Pacific Ocean.

A New Tool May Help Crab Fishers Sidestep Dead Zones

Low-cost sensors that fit into crab pots could provide real-time data on oxygen fluctuations in the ocean

A greater horseshoe bat can use echolocation to target an insect meal.

Five Amazing Adaptations That Help Animals Thrive in the Dark

From snakes that use infrared radiation to find prey to deep sea fishes that communicate via bioluminescence, these creatures flourish without light

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