The stomach of an Ice Age puppy is shedding new light onto the woolly rhinoceros and what—or what didn't—cause these horned ...

On December 7, two sloth bear cubs were born at the Smithsonian National Zoo. It marks the first time in 12 years that cubs ...

A new computational model of the brain based closely on its biology and physiology has not only learned a simple visual category learning task exactly as well as lab animals, but even enabled the ...

With copper-blue blood prized by modern medicine and a body plan older than dinosaurs, the horseshoe crab reveals how ancient ...

Mudskippers break the rules of fish biology by breathing through their skin, walking on their fins and thriving on land where ...

A bright green sea slug along America’s coast feeds on sunlight, not food, borrowing plant power to survive months unfed, ...

While late M-stars are the easiest places to find Earth-sized planets, a new study suggests they are biological dead ends where animal life may never find enough fuel to evolve.

Defecation is commonly treated as a universal feature of animal life, a visible outcome of digestion and metabolic turnover.

After a century-long absence, Colorado has a plan to restore wolverines in their natural habitat. On Thursday, Jan. 15, the ...

Sage grouse rely on one of the most visually striking courtship displays in the animal world. Males inflate large chest sacs, producing sounds and movements designed to attract selective females.

A new study reveals a rare-breaking white dwarf star, dubbed RXJ0528+2838, that is somehow generating a rainbow-like "bow ...

Delaware’s official wildlife animal is not a bird from its coastal marshes or a creature from the Atlantic surf. Instead, it ...