02 December 2013, 01:01 PM ET
Why do koalas have such low-pitched vocalizations? Based on the animal's size, they should have higher vocalizations. The answer lies in an odd fold in their vocal chords.
02 December 2013, 12:47 PM ET
This video captures scientists studying a deadly disease humans could be passing on to an animal, a phenomenon known as "reverse zoonosis."
02 December 2013, 11:41 AM ET
This video shows the extra vocal folds in the throat of a koala, that gives it a deep-pitched voice. The male's "bellowing" vocalizations can also be heard, which are used to woo females during the mating season.
01 December 2013, 01:29 PM ET
The newest giant panda cub at the Smithsonian’s National Zoo was named on Sunday (Dec. 1) in a ceremony in Washington, D.C.
30 November 2013, 07:10 PM ET
The orchid mantis, whose flowery disguise comes complete with legs shaped like petals, is even better than flowers at luring insects. This is the only animal in the world known to look like a flower blossom in order to attract prey.
30 November 2013, 02:54 PM ET
From mantises that look like orchids to lure prey to insects that mimic sticks to blend in with their branch-y surroundings, here's a look at the animal world's plant mimics.
29 November 2013, 05:20 PM ET
How are animals treated in a human-dominated world?
28 November 2013, 10:14 AM ET
Bizarre mammal-like reptiles that roamed the Earth 240 million years ago pooped in communal latrines, the oldest known evidence by millions of years of this behavior. The discovery of high concentrations of fossilized poop provides proof of these weird cr
27 November 2013, 11:12 PM ET
The Brazilian wandering spider is one of the most venomous spiders on Earth.
27 November 2013, 08:36 PM ET
Hornets put fear into the minds of most, but there is a parasite that the hornets fear (if indeed they are capable of fear).
27 November 2013, 02:24 PM ET
Male lions outnumber female lions several-fold. What happens to the rest of the lions, born in equal numbers to females? A new film answers that question.
27 November 2013, 02:18 PM ET
A whale autopsy goes awry as guts, blood and effluvia erupt all over a hapless worker on the Faroe Islands. Exploding whales are an occasional phenomenon along beaches.
27 November 2013, 02:08 PM ET
People won't be motivated about global warming until the call to action is clear.
27 November 2013, 01:27 PM ET
The roundworm Caenorhabditis elegans is one of biology's most widely studied organisms, and the first to have the complete wiring diagram, or connectome, of its nervous system mapped out. Knowing the structure of the animal's connectome will help explain
27 November 2013, 12:01 PM ET
Oncillas, a housecat-size feline that lives throughout Brazil, was once thought to be a single species, but new work shows that it is instead composed of two species.
27 November 2013, 11:47 AM ET
New study finds there’s more than one type of species of collared treerunner.
27 November 2013, 11:26 AM ET
Bonobos, among humans' closest living relatives, are losing ground to people in their natural habitat, a new analysis suggests. Nest counts and remote sensing imagery show that just over a quarter of the apes' range remains suitable.
26 November 2013, 11:41 PM ET
Garden spiders are the creators of the delicate, circular, spoked webs that are the classic image of a spider web.
26 November 2013, 07:01 PM ET
The controversial discovery of soft tissue preserved in the bones of dinosaurs for millions of years finally gets an explanation. According to new research, iron in the dinosaurs' blood acts as a preservative, keeping the tissues safe from decay.
26 November 2013, 05:30 PM ET
Lions in Botswana's Okavango Delta are amongst the largest in the world thanks to an abundance of prey as well as the many rivers -- walking through water builds up the big cats' muscles.
26 November 2013, 03:35 PM ET
A critter cam in northeast China has spotted a female Amur leopard with two little cubs, the first example of the critically endangered cat breeding in China.
26 November 2013, 03:30 PM ET
The International Union for Conservation of Nature (IUCN) has updated its "Red List" of threatened species, with good news for some creatures, including two kinds of albatross, but bad news for others, such as the okapi.
26 November 2013, 02:10 PM ET
A female Amur Leopard was spotted on a conservation cam with two baby cubs in China. The sighting is the first example of breeding by the critically endangered species in China.
26 November 2013, 02:03 PM ET
A female Amur leopard was spotted on a conservation cam with two baby cubs in China. The sighting is the first example of breeding by the critically endangered species in China.
26 November 2013, 01:30 PM ET
Fire ant rafts — which consist of thousands of ants that form the structures in response to floods — are one of the few living materials that behave both like a solid and like a liquid at the same time, researchers have found.
26 November 2013, 12:29 PM ET
Fire ant rafts actively reorganize, a feat that allows them to more effectively cushion themselves against applied forces. Here, a clot is compressed by a petri dish and bounces back in a few seconds after the force is taken away.
26 November 2013, 11:00 AM ET
Seahorses are unique among fish for having bent necks and long-snouted heads that make them resemble horses. Now scientists say the narrow-nosed heads help the slow-moving fish sneak up on quick shrimplike crustaceans.
26 November 2013, 10:33 AM ET
Seahorses have heads perfectly shaped to sneak up on copepods without alerting them, because the area just above and forward of their nostrils produces no fluid disturbance. This video shows a seahorse sneaking up and capturing a copepod.
25 November 2013, 05:24 PM ET
Funnel-web spiders build funnels out of their webs. Some of these spiders are among the most venomous in the world.
25 November 2013, 11:45 AM ET
New research helps track birds poisoned by botulism in the Great Lakes to the origin of the outbreak. Botulism poisoning is a growing problem in the lakes.
25 November 2013, 10:00 AM ET
Paleontologists have unearthed a perfectly preserved, baby ceratopsid skeleton in Canada. The skeleton could help scientists understand how these horned dinos grew over time.
25 November 2013, 10:00 AM ET
A recent study found less plastic trash than expected. Where is it going? Some of it is likely being eaten by deep-sea lanternfish, researchers say.