Animals

Wildcats appear very similar to domestic cats, but they are slightly larger with longer legs.

Domestic Cats Could Breed Scottish Wildcats Out of Existence

Just a few decades of intermixing affected the DNA of all sampled modern wildcats, researchers say, suggesting the species may be "genomically extinct"

Xiao Qi Ji (pictured) and his parents, Mei Xiang and Tian Tian, are leaving Washington, D.C. on November 8.

The National Zoo's Giant Pandas Bid Washington, D.C. Farewell

The three beloved bears will depart for China later today, traveling in style on a FedEx cargo plane

Orcas are highly social and are likely learning the boat-ramming behavior from one another.

Orcas Sink Another Boat in the Strait of Gibraltar

The crew is safe, but the marine mammals did so much damage to the Polish sailing yacht that it couldn't make it back to port

Basilosaurus hunts fish.

Ancient Whales Were the Biggest and Smallest of Their Kind to Ever Roam the Oceans

New discoveries show how whale diversity exploded after the dinosaurs disappeared

Researchers examined how key genes behave across the sea star body by staining genetic material with fluorescent labels.

A Starfish 'Body' Is Just One Giant Head, Study Finds

Genes associated with the torso are largely absent in a species of starfish, upending how scientists perceive these creatures

Cats have 26 different facial movements that combine to make 276 distinct expressions, according to a new study.

Cats Make Nearly 300 Different Facial Expressions

From ear position to pupil size, a new study examines how felines express themselves while interacting with one another

After making headlines this summer for "stealing" surfboards in Santa Cruz, the California sea otter known as 841 has been spotted with a new pup.

California's Surfboard-Stealing Sea Otter Has Given Birth to a Pup

Otter 841 made headlines for her “unusual” behavior this summer, which biologists now say could’ve been related to pregnancy hormones

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

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

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