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Animals

A new study from Japanese researchers found that a stationary cat can track its owner's location by their voice. 

Your Cat May Know Where You Are Even When They Can’t See You

New research suggests domesticated cats keep a ‘mental map’ of their owner’s location, an ability previously unknown in felines

A researcher holds a golden-crowned spadebill in Brazil. Seventy-seven rainforest bird species in the country showed a decrease in body weight over the last four decades.

Climate Change Is Transforming the Bodies of Amazonian Birds

A 40-year study found 77 species of rainforest birds weigh less on average, and many have longer wings, than they used to

The tentacled butterfly ray hadn’t been documented since 1986, but in 2019 Mohsen Rezaie-Atagholipour started finding them hidden as by-catch in Iranian shrimpers’ catch.

Presumed Extinct Tentacled Butterfly Ray Is Found

Scientists were shocked to find the species holding out in the water off Iran

When the queen dies, Jerdon's jumping ants duel to select their next leader.

A Single Protein Can Switch Some Ants From a Worker Into a Queen

Changing the expression of a one protein in the brains of Jerdon’s jumping ants is enough to launch the biological transition

Real guppies respond to Robofish—a 3D-printed plastic model with a vaguely realistic paint job—as if it were a real schoolmate. Researchers used different-sized Robofish to show that guppy schools tend to follow larger fish.

How Scientists Are Using Robotic Animals to Learn About Real Ones

Biomimetic bots can teach researchers a lot about how creatures interact in the natural world

A male (left) and female (right) Nala lividipes earwig

Half of These Earwigs Use Their Right Penis. The Other Half Use Their Left Penis. Why?

Scientists mated males with females under a microscope to try and understand why some are southpaws and others are righties

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Why Do Dogs Tilt Their Heads? New Study Offers Clues

The adorable behavior may be a sign of concentration and memory recall

A humpback whale feeds on sand lance in the Stellwagen Bank National Marine Sanctuary.

Some Whales Can Eat Upwards of 16 Tons of Tiny Shrimp a Day

The giant mammals consume enormous quantities of marine organisms, three times more than previously thought, then their poop fertilizes the sea

The California condor's population stooped dangerously low to 22 individuals in the 1980s, and scientists have been running a captive breeding program since then to save these birds.

California Condors Surprise Scientists With Two ‘Virgin Births’

Genetic data revealed that two females laid fatherless eggs

Mosasaurus was among the largest and last of the sea-dwelling mosasaurs.

Giant Sea Lizards Ruled the Waves While T. Rex Roamed on Land

A new fossil discovery shows marine reptiles called mosasaurs lived up until the asteroid impact that killed non-avian dinosaurs

Spider silk is more than just a web for snaring prey.

Fourteen Ways That Spiders Use Their Silk

From making parachutes to building scuba tanks, the arachnids have come up with some fascinating creations

Hermit crabs are essential scavengers in the ocean. They may crawl into discarded tires looking for food or shelter, and become trapped and die of starvation.

Discarded Tires Are ‘Ghost Fishing’ Hermit Crabs

New research suggests these shell-swapping crustaceans are vulnerable to becoming trapped inside human debris

Not just food: Plant chemicals within nectar yield honey that packs a pharmaceutical punch and helps keep bees healthy.

Honey Has Numerous Health Benefits for Bees

From pesticide detox to increased longevity, the pros of the sweet stuff go well beyond simply nourishing the hardworking insects in the hive

Using micro-CT scans, the team visualized the crab's body in 3-D and even imaged its mouthparts lined with fine hairs. It is unknown if the five-millimeter-long crab is a full-grown adult, a juvenile or a baby.

This Tiny Crustacean Trapped in Amber Tells a Different Story About Crab Evolution

The Cretaceous-era fossil suggests that crabs left the sea some 50 million years earlier than scientists previously thought

For the first time in 16 years, a pair of golden-headed lion tamarins were born on the morning of October 7, 2021. New mom Lola carries the new infants on her back and cradles them close to her body. 

Zoo’s Historic Newborn Tamarin Twins Cling to Mom, Doing What Healthy Babies Do

Keepers worked with breeding parents Lola and Coco, who soon “become very interested in each other”

More than half of koalas admitted to Australia Zoo Wildlife Hospital are sick with chlamydia. 

Australia Begins Vaccinating Hundreds of Koalas Against Chlamydia in New Trial

The infection affects at least half of koalas living in southeast Queensland and New South Wales

Melting sea ice because of climate change forces walruses to congregate on land instead of ice.

Researchers Need Volunteer ‘Walrus Detectives’ to Help Count the Animals in Satellite Images

The project aims to quantify the impact of climate change on the species

Every summer, brown bears descend on Brooks River to pack on the pounds needed to survive their winter hibernation. 

Meet the Bodaciously Bulky Bears of Fat Bear Week 2021

The annual tournament celebrates Alaska’s chunkiest brown bears and their summer-long salmon feast

This year's overall winner Laurent Ballesta spent more than 3,000 hours trying to capture his stunning undersea image of mating groupers.

Ten Breathtaking Images From the 2021 Nature Wildlife Photographer of the Year Awards

The annual awards tell the story of our planet’s creatures and the threats they face

A gharial has the same skull shape as some extinct crocodiles. This skull shape has likely evolved three different times during the history of crocodiles.

Modern Crocodiles Are Evolving at a Rapid Rate

Despite their reputation as “living fossils,” crocodiles have changed dramatically in the last two million years

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