19 April 2014, 10:06 AM ET
Despite some human-like characteristics, elephants' mating behaviors are very different from our own.
19 April 2014, 02:52 AM ET
Do you ever stay up late wondering if there really is a dog?
19 April 2014, 02:30 AM ET
Chickens make lousy house pets (and bunnies take a lot of work) — something to remember at Easter.
19 April 2014, 02:03 AM ET
Sharks and rays are some of the world’s most threatened animals, with a quarter of all species at risk of extinction.
18 April 2014, 03:54 PM ET
PBS's show Nature is featuring animals who have been treated with latest state-of-the-art prosthetics. It premiered April 9th, 2014.
18 April 2014, 10:11 AM ET
Chimpanzees are quite choosy when it comes to their sleeping arrangements, and new research suggests the apes prefer a firm bed made from stiff, resilient wood.
18 April 2014, 09:04 AM ET
When U.S. Navy hospital corpsman Marshall Peters returned from a tour of duty in Kandahar, Afghanistan, in 2010, he couldn't sleep. He felt depressed and anxious, and hated being around crowds or loud noises.
18 April 2014, 09:03 AM ET
Warrior Canine Connection utilizes the healing power of the human-animal bond to help Warriors in recovery from post-traumatic stress and traumatic brain injury.
17 April 2014, 03:37 PM ET
Mountain lion P-22, known for prowling the foothills below the Hollywood sign in Los Angeles, is suffering from mange after ingesting rat poison.
17 April 2014, 02:05 PM ET
Archaeologists discovered animal-printed tile fragments in Blackfriars, Leicester, during excavations in 2014. The artifacts date back to the early Roman era.
17 April 2014, 01:34 PM ET
The paw prints and hoof prints of a few curious animals have been preserved for posterity on ancient Roman tiles recently discovered by archaeologists in England.
17 April 2014, 11:42 AM ET
During copulation, lasting 40 to 70 hours, the female cave inserts her penislike gynosome into the male organ to collect sperm. The female's lengthy penis would be the equivalent of a 5 foot 9 man having a penis about 9.8 inches long.
17 April 2014, 11:15 AM ET
Females with penislike genitals and males with vaginalike organs are cases of a new extreme reversal of sex roles researchers have discovered in little-known cave insects.
17 April 2014, 10:17 AM ET
The toxicity of hobo spider bites to humans has been a matter of scientific debate, but a new study seems to suggest they may not be too toxic after all.
16 April 2014, 06:05 PM ET
A massive great white shark has been spotted swimming close to an Australian beach, scaring the locals and forcing the beach to close.
16 April 2014, 05:00 PM ET
A new species is the oldest and smallest of an ancient group of mammal ancestors, the caseids. The discovery helps fill in the blanks of evolution from a carnivorous to herbivorous lifestyle.
16 April 2014, 03:43 PM ET
Goats might be smarter than one would think, as they can quickly learn and remember how to perform certain tasks, a new study suggests.
16 April 2014, 03:13 PM ET
A group of researchers discovered a dead nose-horned viper with a centipede's head sticking out of its ruptured abdomen. After a post-mortem, the scientists think it's possible that the centipede quite literally eviscerated the snake from the inside out.
16 April 2014, 01:00 PM ET
Sharks are usually thought of as primitive creatures, sometimes called "living fossils." But a new study of a 325-million-year-old shark fossil — the most complete of its kind — suggests modern sharks have evolved significantly from their bony ancestors.
16 April 2014, 12:17 PM ET
Bats' ability to fly may protect the organisms from becoming ill with a range of viruses known to be deadly to humans, including Ebola and rabies, according to a new hypothesis.
16 April 2014, 11:47 AM ET
They don't have gaping maws or fearsome talons. But don't be fooled. These sponges — though they look like fuzzy twigs — are killers. Scientists found four new species of carnivorous sponges that prey on small animals on the seafloor.
15 April 2014, 12:40 PM ET
RZSS officials announced today (April 15) that Britain's only female giant panda, Tian Tian, was artificially inseminated at the Edinburgh Zoo after failing to get it on the natural way with her partner, Yang Guang.
15 April 2014, 10:41 AM ET
Joining iconic American objects like Judy Garland's ruby slippers and the space shuttle Discovery, a nearly complete T. rex skeleton was welcomed to the Smithsonian this morning (April 15).
14 April 2014, 06:20 PM ET
These beautiful flowers are a toxic enemy to cats who might nibble at the flowers' petals or drink their vase water.
14 April 2014, 05:57 PM ET
Ancient spherical fossils dating back to around 500 million years ago appear to be the embryos of a yet-unknown animal. The fossils come from the Cambrian, a time when the diversity of life exploded.
14 April 2014, 05:00 PM ET
By extracting DNA from museum specimens, scientists have discovered three new species of yellow-shouldered bats.
14 April 2014, 04:53 PM ET
For humans, touch is a sense most often associated with the fingers. But man's best friend, the dog, touches the world a different way — with his face.
14 April 2014, 04:17 PM ET
Dolphins sleep with one eye open, and with half their brain wide awake, researchers have found.
11 April 2014, 06:33 PM ET
A certain monkey species is unusually monogamous, a new study finds.
11 April 2014, 04:20 PM ET
Why do humans seek out alcohol even though it can lead to destructive behavior? One biologist looked to evolution for an answer, and came up with The Drunken Monkey Hypothesis.
11 April 2014, 01:23 PM ET
Bushmeat is still on sale in Ghana despite worries that fruit bats and other bushmeat may be behind the spread of an Ebola outbreak in nearby Liberia and Guinea which has claimed around a hundred lives.
11 April 2014, 01:06 PM ET
Rising temperatures are affecting the size of salamanders in the Appalachian Mountains.
10 April 2014, 02:37 PM ET
A recent discovery of a harvestman fossil may shed light on the evolution of the species.
10 April 2014, 02:23 PM ET
Watch the fly's body roll as it executes a hard banked turn after seeing a looming shadow (off camera). The video has been slowed down 300 times. The maneuver is also depicted in an animated sequence.
10 April 2014, 02:19 PM ET
Catching a fly isn't easy, as anyone who has ever tried to swat a fly knows. The reason? The insects maneuver like fighter jets, a new study shows.
10 April 2014, 12:31 PM ET
Researchers have discovered an ancient harvestman fossil in eastern France.