02 November 2015, 03:45 PM ET
An itsy-bitsy mollusk in Borneo is the new record holder for the world's smallest known snail, a new study finds.
02 November 2015, 11:40 AM ET
Sixty-six million years ago, a tyrannosaur may have sunk its sharp and serrated teeth into the bones of another tyrannosaur, new research suggests.
02 November 2015, 06:53 AM ET
A group of ancient "sea monsters" is caught up in a centuries-old case of mistaken identity, according to new research.
31 October 2015, 12:29 AM ET
The masked bandits of the animal kingdom they live in a wide range of climates and habitats.
30 October 2015, 11:54 AM ET
They're the soil-builders that allow Africa's arid savannas to be lush grasslands. What do they do inside their huge mounds - and how does a collective mind allow them to do it?
30 October 2015, 12:43 AM ET
Wombats are small marsupials that look like a cross between a bear, a pig and a gopher.
29 October 2015, 02:15 PM ET
Scientists have uncovered the fossils of an 11.6-million-year-old primate that lived in what is now a province of Barcelona, Spain, where it walked on tree branches and ate fruit meals. Here's a look at the newbie and the site where it was discovered.
29 October 2015, 02:11 PM ET
The fossil of a small primate with "goggle" eyes that strode atop tree branches, snagging snacks of fruit, suggests the last common ancestor of all apes might have been less like humans' closest living relatives than often thought, researchers say.
29 October 2015, 12:12 PM ET
A teeny-tiny fossilized bird skeleton is helping researchers understand the explosive rate at which birds diversified after the dinosaur age, new research shows.
29 October 2015, 05:24 AM ET
Here are six creepy critters to contemplate as you bob for apples, carve pumpkins and eat copious amounts of candy.
29 October 2015, 02:04 AM ET
Salamanders are amphibians that look like a cross between a frog and a lizard. Species include newts, mudpuppies and hellbenders.
29 October 2015, 01:10 AM ET
Bats aren't always creepy — they can be cute and fuzzy, too.
28 October 2015, 02:39 PM ET
Electric eels have a shocking way of demobilizing their dinner.
28 October 2015, 02:36 PM ET
Scientists record sharp voltage increases as feeding electric eels curl their bodies. These electrical discharge immobilize prey by short-circuiting their neuromuscular system, causing extreme muscle fatigue.
27 October 2015, 03:36 PM ET
If an ancient amphibian lost a limb or a tail, it could simply sprout a new one, according to researchers who found fossil evidence of limb regeneration dating back 290 million years.
27 October 2015, 12:25 AM ET
The dingo is a wild, medium-size canine that has roamed Australia for thousands of years.
26 October 2015, 04:43 PM ET
Nearly a million years ago, a cave hyena could have taken down a 5-year-old mastodon weighing more than a ton. And in packs, the predators may have been equipped to demolish a 9-year-old mastodon weighing a hefty 2 tons.
26 October 2015, 03:00 PM ET
Lions are disappearing from large swaths of the African landscape, largely as a result of conflicts with humans and poaching of their prey species, new research suggests.
26 October 2015, 06:58 AM ET
A little more than 200 million years ago, a four-fanged pterosaur flew over the vast desert of Triassic Utah snagging other reptiles with its toothy mouth, until it met its untimely end on the banks of a dried-up oasis, new research finds.
23 October 2015, 10:24 AM ET
Have you heard that expression "better sleep with one eye open?" Crocs may take that advice to heart.
23 October 2015, 12:29 AM ET
The mongoose is a long, furry creature with a legendary reputation as a ferocious snake fighter.
22 October 2015, 12:25 PM ET
It's a tough trade-off for male howler monkeys: a deeper voice, or more sperm?
22 October 2015, 09:32 AM ET
A new study of the species Alouatta caraya has revealed that the deeper the vocalization, the smaller the testicals. This also led to the conclusions that howler monkeys with low-pitch vocalization tended to live in single-male groups.
22 October 2015, 07:28 AM ET
Photographers and researchers from around the world are teaming up to share images of everyone's favorite Halloween mascots — spiders.
22 October 2015, 07:26 AM ET
It's October, and that can mean only one thing: Time to share awesome spider pictures on social media.
22 October 2015, 12:17 AM ET
Impalas are medium-sized antelopes that are native to Africa. They are great jumpers that use their speed to escape predators.
21 October 2015, 02:00 PM ET
Paging Charles Darwin: The island of Santa Cruz within the Galápagos has not one but two distinct species of giant tortoise, a new genetic study finds.
21 October 2015, 06:53 AM ET
When an Apatosaurus dinosaur slapped its impressively long tail onto the ground, other beasts likely listened. Turns out, the long-necked dino may have broken the sound barrier with its tail whips more than 150 million years ago.
21 October 2015, 01:12 AM ET
Goats are among the earliest domesticated animals. Mountain goats live in steep, rocky areas.
20 October 2015, 09:42 AM ET
Using computer modeling, researchers have produced scenarios in which the tails of diplodocid sauropods could have whipped at supersonic speeds. They constructed a 1/4 scale model with 3D printing to test their theory.
19 October 2015, 03:22 PM ET
If humans had never set foot in the Bahamas, the islands today might be teeming with Cuban crocodiles, Albury's tortoises and rock iguanas, a new study finds.
19 October 2015, 07:06 AM ET
An adolescent Tyrannosaurus rex named Jane may settle a dispute more than 70 years in the making: Whether small carnivorous dinosaurs are younger versions of T. rex, or another species altogether, a new study finds.