Animals
Pablo Escobar's Multiplying 'Cocaine Hippos' Will Be Sterilized in Colombia
The country’s hippo population has grown to about 170, and officials warn it could reach 1,000 individuals by 2035 if left uncontrolled
Oil Spill Dumps as Much as 1.1 Million Gallons Into Gulf of Mexico, Raising Concerns About Wildlife
The U.S. Coast Guard is still searching for the specific source of the leak, which occurred last week
This Bat Uses Its Extra Long Penis Like an Arm While Mating
Serotine bats are the first mammals known to mate without penetration, new research suggests
Scientists Created a Monkey With Two Different Sets of DNA
So-called "chimeric" monkeys could help scientists understand human diseases and aid in conservation efforts, but the research raises ethical questions
Does Vanilla Flavoring Actually Come From Beaver Butts?
Despite internet claims, castoreum—a substance found in beaver glands—is rarely used today as a food flavoring
An Inside Look at the Effort to Curb Deadly Snakebites in India
With around 58,000 human deaths from snakebites each year in the country, a lot more must be done to save lives
Watch Dolphins Outsmart Crab Traps in First-Ever Footage
Bottlenose dolphins in Australia have been snatching fish used to bait crabs—and adapting to fishers' attempts to thwart them
Like Humans, Some Bonobos Cooperate With Outsiders
We might not be the only primates to display helpful behavior toward members of a different social group, a new study suggests
Metal Pollution May Be Making More Green Sea Turtles Female
In addition to warming temperatures, new research finds contaminants might contribute to the endangered reptiles' skewed sex ratios
Puking Bird Wins New Zealand's Bird of the Century Contest After John Oliver Campaign
The comedian launched an “alarmingly aggressive” global effort on behalf of the pūteketeke to shore up its victory in the annual popularity competition
Australia's Oldest Known Bird Tracks Are 120 Million Years Old
In that age, the continent was attached to Antarctica, but migrating animals still traveled to the polar region for sustenance
Scientists Find 'Lost' Echidna Species for the First Time in 60 Years
An expedition team in Indonesia spotted the elusive, egg-laying mammal, which is named after David Attenborough and had not been documented since 1961
Cheetahs Become More Nocturnal in Extreme Heat, Study Finds
Hunting later at night may force the big cats to surrender their prey to larger carnivores, such as lions and leopards
When Did Humans Arrive in the Americas? Lice Help Answer That Head-Scratcher
A new analysis of the annoying critters shows when groups from Asia and Europe hitched rides on human hair and skin to arrive on our continent
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"
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 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
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
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 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
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