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Zoology

European hedgehog numbers are shrinking.

European Hedgehogs’ Hearing Might Be Attuned to Ultrasonic Sounds. The Discovery Could Help Scientists Save the Declining Species

Sound-based deterrents could help keep the animals away from fast-moving cars and dangerous landscaping equipment

Researchers spent six years observing interactions between bull sharks at Fiji's Shark Reef Marine Reserve.

Bull Sharks Are Large, Aggressive Predators—but They Also Know How to Make ‘Friends,’ New Research Suggests

The animals probably socialize to learn new skills and to find food and mates

Some researchers think that two varieties of orcas are so different that they should be considered separate species. 

Do These Severed Orca Fins Covered in Tooth Marks Mean Killer Whales Are Cannibals? It’s Complicated, Scientists Say

Researchers suggest that predation by a subspecies called Bigg’s orcas might explain why members of another one, called resident orcas, stay in such large family groups

Punch with his stuffed animal

Why Has Punch, an Adorable Baby Monkey, Struggled to Fit in With His Troop? Scientists Explain the Lives of Japanese Macaques

Experts say the other monkeys’ aggressive behaviors toward Punch are pretty normal

Tiger Kingdom facilities are popular tourist attractions in Thailand.

Seventy-Two Captive Tigers in Thailand Die From Dangerous Infections, Sparking Concerns Over Animal Welfare

An animal foundation asks why the big cats weren’t vaccinated against a well-known virus

A giant phantom jelly documented by a recent deep-sea expedition

See a Rare, Bus-Size Giant Phantom Jelly Wade Through Ocean Waters Off the Coast of Argentina

A recent deep-sea expedition along the country’s entire length documented the jellyfish, along with a surprising number of other species

Humpback whales blow curtains of bubbles beneath fish and krill to trick them into thinking they're trapped.

Humpback Whales Are Probably Learning How to Catch Prey With Bubble Nets by Watching One Another

The foraging strategy may help make humpbacks more resilient to food scarcity, emphasizing the importance of preserving their cultural knowledge, a study suggests

Veronika scratches her back. 

A Cow Named Veronika Can Scratch Her Back With a Broom. Watch the Video That Scientists Are Calling the First Documented Evidence of Cattle Using Tools

The pet cow’s tool use challenges long-held assumptions about bovine intelligence

A worker bee (left) and a queen bee (right) slurp up artificial nectar during laboratory experiments.

Queen Bumblebees’ Tongues Aren’t Built for Slurping Nectar—Which Might Keep the Royals Homebound

Queen bumblebees have sparser hair on their tongues than worker bees, which makes them less efficient at lapping up nectar, new research suggests

Three-dimensional reconstructions of the rockhead poacher's insides hint that the fish may beat its cranial pit like a drum

Cool Finds

This Bizarre Fish Has a Hole in Its Head. The Creature Might Use It Like a Drum to Rock Out

The rockhead, or deep-pitted, poacher may use its ribs to beat the inside of its head cavity to communicate with other creatures, according to a new study

The researchers examined 3D reconstructions of hundreds of ant exoskeletons.

Some Ants Sacrifice Stronger Exoskeletons for Larger Colonies, Which May Help Them Take Over New Environments

Species with thinner protective barriers may need fewer resources and tend to have a greater ability to adapt to new habitats, a study suggests

Claude lived at the California Academy of Sciences for 17 years and became a beloved celebrity.

Claude, San Francisco’s Beloved Albino Alligator and ‘Unofficial Mascot,’ Dies at Age 30

Veterinarians will conduct a full exam and necropsy to determine the cause of death, but Claude had been undergoing treatment for a suspected infection in recent weeks

For the study, the researchers worked with two adult male macaques that had previously been trained to tap in time with a metronome.

These Monkeys Learned to Tap to the Beat of the Backstreet Boys. Can They Teach Researchers About the Origins of Human Musicality?

Two macaques learned to keep time with various songs, which might point to how humans got their sense of rhythm. But some scientists doubt that the primates’ feat, which required extensive instruction, can give evolutionary clues

The unfamiliar monk parakeets got to know each other slowly before moving on to behaviors like preening, pictured here.

Monk Parakeets Are Highly Social Birds, but They Slowly ‘Test the Waters’ When Making New Friends

The bright green parrots start with low-cost social behaviors—like sitting near each other without touching—when first interacting with unfamiliar birds within their species, possibly to avoid aggressive encounters, new research suggests

Pigeons can sense magnetic fields via their inner ears, new research suggests.

Pigeons Rely on the Earth’s Magnetic Field to Navigate. Now, Researchers May Have Uncovered How They Do It

The vestibular system, a set of structures in the inner ears that helps with balance, may grant the birds their special ability

The new research may help scientists and conservationists better monitor African lion populations. 

Listen to a Lion’s Second Type of Roar, Which Was Just Discovered by Scientists

Researchers uncovered the previously unknown vocalization while creating an algorithm that can identify and monitor lions based on audio recordings

Asian elephant Nhi Linh, who stands in the foreground, is pregnant. Behind her is Spike, who sired the calf.

This ‘Feisty’ Asian Elephant at the National Zoo Is Pregnant. She May Birth the First Calf Born There in Nearly 25 Years

With fewer than 50,000 Asian elephants estimated to be remaining in the wild, the Smithsonian’s announcement gives hope to those working to preserve the endangered species

European starlings were the best at imitating R2-D2's multphonic sounds because they can control both sides of both sides of the syrinx independently, the researchers say.

Birds Are Beeping and Booping like R2-D2. Their Mimicked Sounds Are Helping Unlock the Secrets of Avian Communication

European starlings were better than parrots at imitating R2-D2’s high-pitched chattering, possibly because of their special control over a vocal organ

Two new studies explored the impact beavers have on bats and pollinator insects.

Beavers are Dam Good for Biodiversity, Bringing Bats, Butterflies and Other Critters to Their Neighborhoods

Two new studies suggest that the semi-aquatic rodents provide food and habitat for bats and pollinator insects within their engineered ecosystems

Members of the Haíɫzaqv (Heiltsuk) Nation caught the crafty female wolf on camera.

Watch a Wolf Cleverly Raid a Crab Trap for a Snack. It Might Be the First Evidence of a Wild Canid Using a Tool

Footage from British Columbia shows just how intelligent wild wolves can be, but scientists are divided as to whether the behavior constitutes tool use

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