05 August 2014, 01:01 PM ET
Horses use a cocked head, perked ears and eyes to communicate, new research suggests.
05 August 2014, 12:24 PM ET
Bobcats and lynx are cats that have stubby tails and ears topped with furry black tufts.
04 August 2014, 11:48 AM ET
The platypus is one of the most unusual creatures in the animal kingdom. It looks like it was put together from parts of other animals; females lay eggs, and males are venomous.
03 August 2014, 09:29 AM ET
To save bonobos, science must first get into the minds of those responsible for determining the animals' fate.
02 August 2014, 12:24 PM ET
Porcupine mating involves short periods of fertility, urinary ejaculation and vicious battles between males. In the end the female controls how things play out, and, yes, she must lay down her quills so a male can safely mount her.
01 August 2014, 03:16 PM ET
A family of long-legged shorebirds adopted a fuzzy baby duckling in California's San Francisco Bay.
01 August 2014, 02:31 PM ET
An invasion is afoot along beaches from Oregon to California: Millions of glassy purple, jellyfish-like sea creatures that look like sailboats have been washing ashore.
01 August 2014, 12:57 PM ET
Red-footed tortoises have learned how to use the device in exchange for a strawberry, a new study reports. Researchers taught the tortoises a few touch-screen basics in order to learn about the animals' navigational techniques.
01 August 2014, 12:11 PM ET
They are solitary creatures that live about 7 to 12 years in the wild.
31 July 2014, 08:02 PM ET
Scientists have rendered a once-furry mouse transparent, its brain, guts and all. Here's a look at the beauty beneath the rodent's skin.
31 July 2014, 07:52 PM ET
Theories explaining the forked tongues of snakes have been around for thousands of years.
31 July 2014, 05:39 PM ET
Scientists are still assessing the damage to coral communities from the catastrophic 2010 Deepwater Horizon oil in the Gulf of Mexico.
31 July 2014, 03:16 PM ET
The U.S. Geological Survey plans to map the continental shelf off the East Coast using acoustics, but some environmentalists say marine mammals might be at risk.
31 July 2014, 02:21 PM ET
Rams are male bighorn sheep. They have long, curved horns that they use to fight for dominance.
31 July 2014, 02:01 PM ET
Miniaturization over 50 million years may have allowed birds to survive and evolve from their dinosaur relatives. In essence, bird ancestors out-shrank and out-evolved their dinosaur relatives to survive where these giant, less evolvable beasts couldn't.
31 July 2014, 11:59 AM ET
Buffalo are large bovines that live in Africa and Asia. They are related to American bison, but they are different animals.
31 July 2014, 10:21 AM ET
Arms into feathered wings; bones hollowing out; morphology minimizing: The lineage of modern day birds includes the Tyrannosaurus and the Velociraptor, dating back over 50 million years.
30 July 2014, 08:22 PM ET
A recent study investigates the relationship between stress hormones and parental care in the banded mongoose.
30 July 2014, 05:23 PM ET
In a new case report, scientists detail a gruesome anteater attack that left one man dead in northwestern Brazil. While such incidents are rare, the attack should serve as a warning to hunters and others who share the same turf as anteaters.
30 July 2014, 04:04 PM ET
Bears are omnivorous mammals found all over the world. There are eight species, and most of them are endangered.
30 July 2014, 02:38 PM ET
In this test of spatial cognition, red-footed tortoises presented with shapes in varying positions were rewarded with bits of strawberry when they touched the targets.
30 July 2014, 02:00 PM ET
For 53 months, scientists watched a female octopus in the deep sea vigilantly guard a single clutch of eggs until they hatched. This was the longest brooding period scientists have ever observed — not just for octopuses, but also for all animals.
30 July 2014, 02:00 PM ET
A real-life "Octomom" off the coast of California has been declared a champion of parenting in the animal world. Scientists watched as she shielded her eggs for a record 4.5 years.
30 July 2014, 11:27 AM ET
Improving the design of the world's tiniest drones could start with taking a closer look at one of nature's smallest and most efficient flyers, the hummingbird.
30 July 2014, 10:32 AM ET
When compared to a Black Hornet autonomous micro-helicopter, the Anna's hummingbird (seen at various speeds) was 27% more efficient at hovering. This Stanford University research could lead to bird-inspired helicopters and other engineering advances.
30 July 2014, 10:12 AM ET
Geckos were research stars in space long before the outpouring of media attention that focused on their mission last week. Before space agencies can begin complicated experiments, scientists need to determine how these tiny lizards adapt to life in space.
30 July 2014, 10:00 AM ET
Scientists poring through buckets of raw amber from the Dominican Republic discovered a new insect species. The amber was collected in 1959 and rediscovered in 2011 in a closet.
29 July 2014, 07:41 PM ET
Puma, panther, cougar and mountain lion are different names for the same species of big cat that can be found from Canada to the southern tip of South America.
29 July 2014, 12:08 PM ET
They've been described as walking artichokes and the most trafficked mammals in the world. Now, conservationists warn that pangolins, or scaly anteaters, could be eaten out of existence if illegal hunting and poaching continue.
29 July 2014, 10:59 AM ET
Conservationists warn that all eight species of pangolins, or scaly anteaters, may be eaten to extinction if illegal hunting and poaching continues.
28 July 2014, 03:05 PM ET
The previous mass extinction, which wiped out the dinosaurs, happened about 65 million years ago, likely from a catastrophic asteroid that collided with Earth. In contrast, the looming sixth mass extinction is linked to human activity.
28 July 2014, 02:06 PM ET
Ranavirus may be partly to blame for dwindling frog populations.