A big brain can be a liability instead of an asset for many mammals, finds new research that identifies a reversal of a 40-million-year-old trend.

Monkeys that are revolted by often disease-carrying things such as poop suggest that disgust drives cleanliness - and health.

A dinosaur couple that appears to have died together after wooing each other has been identified in remains unearthed at the Gobi Desert in Mongolia.

Black widow spiders have rapidly evolved super lethal venom, such that the spiders are now building stronger webs to handle ever-bigger prey.

Inbreeding, poaching, a lack of herders and climate change are contributing to the iconic animal's decline.

Dried whiskey looks like fine art when magnified thanks to its chemical composition and a cool aspect of fluid dynamics known as the Marangoni Effect.

Wolf packs, like people, organize themselves for maximum success, only the goal in the case of wolf hunting packs is to kill for survival.

Zebra stripes turn out to have a surprising function.

Resourceful ants know what to do during a flood: They build a raft and stick the queen right in the middle of it.

Sweet Pea, a shark ray, just gave birth to seven pups, making her the first shark ray in captivity to successfully give birth.

A bird known for its gender-bending ways has yet again surprised researchers by breaking Europe's bird migration record.

The 'dog paddle' closely resembles how pups trot on land, new research shows.

Giant sloths were on the menu for humans that arrived in the Americas 30,000 years ago, a new study suggests.

A dung beetle in Africa has traded flight for galloping, picking up dried feces along the way.

Just a whiff of a woman close to ovulation is enough to stimulate another woman's testosterone levels.

Turtle shells evolved before dinosaurs roamed the earth.

A neanderthal skeleton unearthed in Italy shows interbreeding with humans, the first such known hybrid.

A miniscule bit of DNA from an African American man now living in South Carolina has been traced back 338,000 years.

Emperor penguins gain body heat using convection from the surrounding air.

Viruses with their own immune systems can kill bacteria, and could be key in fighting superbugs.

Cat starting to copy your habits? Don't be alarmed ...

The 113th annual Christmas Bird Count is now underway! Join in!

With its oversized schnauzer, this newly identified dino likely had an impressive sense of smell.

People who consume tofu and other plant-based foods might enjoy a better sex life than meat-eaters.