Animals

A group of chimpanzees at elevation listen for rivals.

While Some Chimps Go Low, Others Go High to Avoid a Dangerous Fight

Primate groups climb to elevation to scout out rivals and steer clear of clashes

Frances Mabel Hollams, Buster, Shandy and Bluett—Dalmatians, 1936

You Could Own Rare Artworks Celebrating Canine Companions

An upcoming "Dog Sale" at Bonhams Scotland features 250 paintings, sculptures and more

Typewriter Eraser, Scale X by Claes Oldenburg and Coosje van Bruggen

After Getting Stuck in a Sculpture at the National Gallery of Art, This Barred Owl Is Now Flying Free

The bird spent some time recuperating at two rehabilitation facilities and is now back in the wild

Female chimps at the Taronga Zoo in Sydney, Australia, in 2005. The new study followed 185 chimps in Uganda's Kibale National Park for 21 years.

Wild Female Chimpanzees Go Through Menopause, Study Finds

Until now, menopause had not been documented in wild, non-human animals, except for a few species of toothed whales

A captive breeding program has seen the return of Galápagos giant tortoises to Española in the Galápagos Islands. As the tortoise population rebounds, the island ecosystem is in the process of transforming.

Galápagos Giant Tortoises Are Ecosystem Engineers

A decades-long project shows how the reptiles are changing the island of Española

In the new experiment, roosters made fewer alarm calls, meant to warn peers of predators, when placed in front a mirror versus when standing near another rooster.

Roosters May Recognize Their Reflections in Mirrors, Study Suggests

The findings demonstrate self-recognition could be more common among animals than previously thought

A chum salmon in Alaska's Katmai National Park and Preserve. Salmon numbers are declining in some places due in part to climate change.

Climate Change Is Pushing Salmon North in Alaska, Scientists Say

Researchers recently found about 100 chum salmon spawning in the Arctic, suggesting the species is shifting to new habitats

The female Pacific footballfish measured about 14 inches long.

Rare Deep-Sea Anglerfish Washes Up on a California Beach

The finding marks the second time in three years that an elusive Pacific footballfish has been found on the sand at Crystal Cove State Park

North Atlantic right whales face threats of entanglement in fishing gear and injuries caused by ships.

North Atlantic Right Whale Numbers May Be Stabilizing at Last

After a decade of decline, the latest population estimate is good news—but conservationists say we "have a long ways to go" to safeguard the marine mammals

Bobi now holds two records for the oldest living dog and the oldest dog ever.

Bobi, the World's Oldest Dog, Dies at 31

The long-lived Portuguese canine broke two world records and captured the hearts of people around the world

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

Chinese mitten crabs compete with native species for habitat and food.

These Furry-Clawed Crabs Are Wreaking Havoc in the United Kingdom

Conservation officials have installed the first Chinese mitten crab trap in England, and they are asking the public to report any sightings

The cave lion skeleton from Siegsdorf in Germany with a replica of a wooden spear that may have been used to kill it. The authors theorize that Neanderthals may have stabbed the lion while it was resting or after it had been injured.

Neanderthals May Have Hunted Cave Lions

Researchers say well-preserved bones may be the earliest direct evidence of the hunting of large predators

Mass Audubon's science coordinator Mark Faherty examines a horseshoe crab in Pleasant Bay, where he has conducted research on them for years.

New Synthetic Horseshoe Crab Blood Could Mean Pharma Won't Bleed the Species Dry

The “living fossils” have been vital for testing intravenous drugs, but a few large pharmaceutical companies are using a lab-made compound instead

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, cleaned by the museum’s flesh-eating beetle colony and become part of its collection to inform future scientific research. 

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

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