Animals Archive
10 June 2014, 12:18 PM ET
Dozens of sperm cells of the ant species Cataglyphis savignyi bundle together. Bundled sperm move twice as fast as single sperm, perhaps giving them an evolutionary advantage.
10 June 2014, 11:52 AM ET
Chimpanzees can outsmart humans in simple strategy games because they have evolved in highly competitive cultures.
10 June 2014, 05:17 AM ET
Animal testing is not the "gold-standard" — nor should it be.
10 June 2014, 04:05 AM ET
We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to get a leg in.
09 June 2014, 08:07 PM ET
Wolves are large carnivores — the largest member of the dog, or Canid, family. Wolves are common to all parts of the Northern Hemisphere.
09 June 2014, 06:47 PM ET
A puzzling fossil find from more than 500 million years ago has scientists curious about how 'bilateral' creatures such as humans evolved. The ancient 'tapeworm' appears to have become bilaterally symmetrical earlier than other organisms.
09 June 2014, 08:34 AM ET
Until now, Oregon was the one state along the U.S. West Coast essentially spared from the disease, which causes a sea star's body to disintegrate, ultimately leading to death.
09 June 2014, 08:03 AM ET
Sea star wasting syndrome, which has been documented from California to Alaska and even along the East Coast from Maine through New Jersey, causes a sea star's body to disintegrate into a puddle of goo, ultimately leading to death.
08 June 2014, 05:05 PM ET
Just as humans lament not pursuing a lover or bemoan having eaten that extra slice of chocolate cake, rats may experience feelings of regret, too, new research suggests.
07 June 2014, 10:21 PM ET
This spring, the racehorse California Chrome won the first two legs of the Triple Crown. If he wins, he will be the first Triple Crown winner in 36 years and only the 12th horse in history to do so.
07 June 2014, 02:14 AM ET
Deer sterilization is starting to make an impact in U.S. communities.
06 June 2014, 02:32 PM ET
An amazing new video shows Arctic life from a polar bear's point of view.
06 June 2014, 02:30 PM ET
For all you bird lovers out there, you can watch a set of newly-hatched osprey chicks ruffle their tiny feathers on a live webcam.
06 June 2014, 10:40 AM ET
A female polar bear equipped with a radio collar was captured having a meal, interacting with a potential mate, and swimming. The footage was recorded in April 2014 in the Beaufort Sea, a marginal sea of the Arctic Ocean.
05 June 2014, 05:56 PM ET
Rabbits are small mammals with fluffy, short tails, whiskers and distinctive long ears. There are about 30 species of rabbits around the world.
05 June 2014, 03:30 PM ET
Oregon's wandering gray wolf OR-7 has settled down and is rearing its first puppies.
05 June 2014, 02:32 PM ET
Since the catfish's barbel whiskers detect dinner by detecting acid levels in the sea, the researchers say the freaky looking fish could be affected by the rise in carbon dioxide emissions, which dissolve in water and increase ocean acidification.
05 June 2014, 12:10 PM ET
The first three-dimensionally preserved eggs of ancient winged reptiles that lived more than 100 million years ago have been unearthed in China.
05 June 2014, 12:07 PM ET
Researchers found preserved pterosaur eggs, and the fossilized remains of adult pterosaurs, in the Turpan-Hami Basin in China. Pterosaurs are prehistoric winged reptiles that lived during the time of dinosaurs.
05 June 2014, 02:48 AM ET
For decades, scientists have tried to understand the complex and gruesome relationship between the parasitic emerald wasp Ampulex compressa and its much larger victim, the common household cockroach Periplaneta americana.
04 June 2014, 07:00 PM ET
Loud little frogs in Taiwan get a boost from manmade structures by issuing their mating calls from open concrete drains, new research finds. The drains are unlike anything in the frogs' natural environment, but they use them anyway.
04 June 2014, 05:00 PM ET
A complete fossil skull of an 11-million-year-old worm lizard reveals that these bizarre creatures have evolved little from that time to today. Researchers used high-tech imaging to study the miniscule skull.
04 June 2014, 03:12 PM ET
California brown pelicans almost completely failed to breed at their nesting sites in Mexico this year.
04 June 2014, 08:43 AM ET
Deep-sea fish capture more than a million tons of carbon dioxide from U.K. and Irish surface waters each year, a new study found.
03 June 2014, 09:22 PM ET
A Virginia man who pleaded guilty to charges of dinosaur fossil smuggling has been sentenced to three months in federal prison, a sentence intended to deter the sale of fossils taken illegally from their countries of origin.
03 June 2014, 07:01 PM ET
A new study suggests that humans were mostly to blame for the extinction of large mammals such as the woolly mammoth, though controversy over the cause of the global loss of megafauna will likely continue.
03 June 2014, 07:01 PM ET
Koala bears cling to tree trunks in order to cool off on hot summer days, reducing how much they have to pant and saving precious water, new research finds.
03 June 2014, 07:01 PM ET
Koala bears cling to tree trunks in order to cool off on hot summer days, reducing how much they have to pant and saving precious water, new research finds.
03 June 2014, 02:52 PM ET
Camels are mammals with long legs, a big-lipped snout and a humped back. There are two types of camels: dromedary camels, which have one hump, and Bactrian camels, which have two humps.
03 June 2014, 10:20 AM ET
A stick insect camouflaged in the forests of southern China got its cover blown last month by a flashlight-toting scientist who identified the critter as a new species.
02 June 2014, 02:49 PM ET
Scientists have discovered a new type of extinct croc in South America. At 16 feet (4.8 meters) long and 900 lbs. (408 kilograms), it ate turtles and battled with monster snakes.
02 June 2014, 01:22 AM ET
Unlike most barnacles that are happy to simply stick themselves to a rock and filter food from the water, Sacculina and its kin have evolved to be parasitic, and they are horrifyingly good at it.