The crab-eating fox and the coyote may soon swap territories, initiating the first American cross-continental exchange in more than three million years

Since starting in September 2019, the Australian wildfires have killed more than 1 billion animals and devastated large swaths of the country. Countless courageous men and women have worked hard to combat the infernos and save the country’s animals, many of which are endangered. Among these brave rescue workers is Patsy — a six-year-old kelpie-border collie.

A former abattoir worker describes her job and the effect it had on her mental health.

PORTLAND, Maine (AP) — An aquarium and an engineering firm in Massachusetts are partnering on a project to better protect whales by monitoring them from space.

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While the chimps didn't match the beat, it's an indication they respond instinctively to sounds.

A new report shows that groundwater needed to construct Trump's border wall will increase the likelihood of extinction for eight species.

We have seen the depths of hell, and it is a sloth. A cheerful-faced, slow-moving two-toed sloth, peering out of its comfortable position, snugly ensconced in... a human toilet.

The once struggling New York Harbor whale population is now rebounding with water clean-up initiatives and these faithful citizen scientists’ efforts.

Say “sit!” to your dog, and—if he’s a good boy—he’ll likely plant his rump on the floor. But would he respond correctly if the word were spoken by a stranger, or someone with a thick accent? A new study shows he will, suggesting dogs perceive spoken words in a sophisticated way long thought unique to humans.

ASA recruits a diverse array of scientists to study our planet and our universe. But one female research assistant, based in Pasadena, California, has a rather unusual resume and bio.

New vision technology could soon allow humans to take a step into the animal kingdom.

Eli Boroditsky was driving to his night shift last week on a narrow rural road in Manitoba, Canada, when his car hit what he thought was a dog streaking across the dark road. After he clipped the animal, it flew into the ditch on the shoulder. He parked and used a small flashlight to get a look. "I thought it was a German shepherd or a husky," he told CNN news partner CBC. "I didn't think it was a wild animal."

In centuries past, large flocks of noisy, brightly colored parrots squawked their way across the United States—from New England, to Florida, to eastern Colorado. The Carolina parakeet, or Conuropsis carolinensis, was the only parrot native to the eastern part of the country. But by the beginning of the 20th century, it had disappeared.

For many years, researchers have made certain assumptions about same-sex sexual behaviors in animals — but what if their assumptions have been wrong?

Tim Funk slid open the barn doors, and his herd of horses thundered into the arena, kicking up thick clouds of dust that mixed with their steamy breath to dance on the slivers of afternoon sunlight that peeked through the windows.

A womanizing tortoise whose rampant sex life may have single-handedly saved his entire species from extinction has retired from his playboy lifestyle, returning to the wild with his mission accomplished. Diego's unstoppable libido was credited as a major reason for the survival of his fellow giant tortoises on Espanola, part of the Galapagos Islands, after being shipped over from San Diego zoo as part of a breeding program.

On a hot day last spring, I removed my shoes at the hospital’s entrance and walked up to the second-floor lobby, where a clerk in his late 20s was processing patients. An older woman placed a shoebox before him and lifted off its lid, revealing a bloody white parakeet, the victim of a cat attack. The man in front of me in line held, in a small cage, a dove that had collided with a glass tower in the financial district. A girl no older than 7 came in behind me clutching, in her bare hands, a white hen with a slumped neck.

The notion that there might be some new kind of killer whale emerged in 1955, when photos from New Zealand showed a bunch of unusual-looking whales stranded on a beach.

The creatures are not just incredibly clever, but also carnivorous, meaning a huge amount of wild fish will be caught to feed them, putting pressure on the ecosystem.