28 July 2014, 12:02 AM ET
The space rock that wiped out most of the dinosaurs may have had a colossal case of bad timing. If the impact had occurred a few million years earlier or later, more of the majestic beasts may have survived, scientists say.
26 July 2014, 04:00 AM ET
When commercial whaling was banned in 1986 it put an end to a harvest that threatened the existence of some of the most majestic animals on Earth.
26 July 2014, 03:49 AM ET
Animals have evolved to occupy almost all corners of the Earth. To survive, no matter the weather outside, they all need temperature-sensitive bodily reactions to work.
26 July 2014, 03:24 AM ET
Feed the birds — but not bread, crackers and junk food.
26 July 2014, 02:47 AM ET
Despite film portrayal, bonobos tend to be peacekeepers, even after experimentation.
25 July 2014, 11:56 AM ET
As a zookeeper, sometimes you get to pick favorites (but don't tell the monkeys).
25 July 2014, 11:31 AM ET
Researchers observed that a certain species of squirrel in New York City adapts its behavior to that of humans by avoiding unnecessary contact with people and going about its day uninterrupted.
24 July 2014, 05:42 PM ET
The birds of the American Southwest are as numerous and diverse as the multiple environments and landscapes upon which they carry on their daily life cycles.
24 July 2014, 03:14 PM ET
Macaws, Amazon parrots, cockatiels, parakeets, and cockatoos are the most popular pet parrots.
24 July 2014, 02:11 PM ET
Steven Spielberg's 'Jurassic Park' might need a little more revising — a newly discovered dinosaur species offers hints that feathers were much more common among the ancient beasts than once thought.
24 July 2014, 02:00 PM ET
A newfound plant-eating dinosaur that was equipped with feathers suggest most dinosaurs may have worn such downy coats.
24 July 2014, 01:41 PM ET
Monkeys living in the forests around the city of Fukushima in Japan show lower blood cell counts than monkeys from northern Japan, and have detectable levels of cesium in their bodies, a new study reports.
24 July 2014, 12:19 AM ET
What scares a zookeeper may not be what you expect.
23 July 2014, 04:35 PM ET
Ibex are very agile and can easily climb mountainous terrain with their strong, cloven hoofs.
23 July 2014, 03:06 PM ET
Parallel Tyrannosaur footprints unearthed in Canada suggest the fearsome predators were pack animals that may have hunted in groups to increase their odds of survival.
23 July 2014, 02:10 PM ET
Man's best friend does not like anything muscling in on that friendship; — the first experimental test of jealousy in dogs shows that canines nip even at stuffed dogs when these fakes are taking away the attention of the animals' owners.
23 July 2014, 02:03 PM ET
The feeding grounds of blue whales along the U.S. West Coast overlap dangerously with shipping lanes, placing the behemoths in danger of collisions with ships. This finding could help prevent human threats to these endangered titans, scientists added.
23 July 2014, 02:00 PM ET
Researchers have tagged more than 100 blue whales off the California Coast, finding the behemoths feed around major shipping lanes.
23 July 2014, 11:53 AM ET
New tyrannosaur trackways unearthed in Canada suggest that the ferocious predators may have been pack animals.
22 July 2014, 05:43 PM ET
Elephants are known for their impressively long trunks, but perhaps less well known is the large number of genes that code for their sense smell. In a study of 13 mammals, African elephants were found to be superior sniffers.
22 July 2014, 05:00 PM ET
African elephants bested rats, a former olfactory record-holder, among selected placental mammals.
22 July 2014, 11:00 AM ET
Generally, polarized light is something you wear sunglasses to avoid, but for bats, the glare is actually useful.
22 July 2014, 03:32 AM ET
Zookeepers have an interesting job — some days you cuddle with endangered species, others you just try not to get bitten.
22 July 2014, 03:07 AM ET
Huge swaths of sea are now protected, thanks to sea turtles.
22 July 2014, 02:32 AM ET
Loggerhead turtles inspire largest-ever U.S. critical habitat zone.
21 July 2014, 05:16 PM ET
These animals are often kept as pets or farmed for their prized fur.
21 July 2014, 05:12 PM ET
Gazelles are a major food source for predators and rely on their speed to escape.
21 July 2014, 01:33 PM ET
As the number of offshore wind farms continues to grow, the farms could affect both seals and their prey, say scientists who discovered the animals may use the giant wind farms as hunting grounds.
21 July 2014, 11:50 AM ET
For the first time in more than 30 years, a litter of wolf pups was born in the wild in Mexico, wildlife authorities announced. The birth of the first wild litter marks an "important step in the reintroduction program" for the species.
21 July 2014, 11:43 AM ET
A river teeming with spawning salmon lures grizzly bears from hundreds of miles away, new research suggests.
20 July 2014, 12:59 AM ET
No one likes to think alone.
18 July 2014, 05:28 PM ET
A lumpy fossil — billed as the longest piece of ancient poop — will hit the auction block next week.
18 July 2014, 05:03 PM ET
Graeme Shannon, a postdoctoral behavioral ecologist at Colorado State University, studied how prairie dogs coped with the loud sounds of traffic. The findings are important for people who manage noise pollution.
18 July 2014, 04:33 PM ET
Four new species of tuco-tuco, a small, gopher-like rodent, have been discovered in Bolivia. Tuco-tucos are named after their unusual -- and loud -- vocalizations.
18 July 2014, 03:16 PM ET
Four new species of rodents called tuco-tucos have been discovered in Bolivia. The animals are named after their unusual vocalizations.
18 July 2014, 06:43 AM ET
If humans weren't in charge, robots, ants or rodents could come to dominate the Earth, scientists say.