The evolution of sex remains one of biology's greatest puzzles. While sexual reproduction dominates across the animal kingdom ...

An extraordinary street cat captures social media's heart by bringing her beautiful, diverse new litter to her favorite ...

New research from Queen Mary University of London shows how extreme seasonal patterns are causing rainforest butterflies to ...

Researchers with the Voyageurs Wolf Project documented cougar reproduction in Minnesota, the first such evidence for the ...

Just like humans, cats can have mild to severe acne. Any cat can have feline acne (or cat acne), but this skin condition is more common in cats with skin folds or long hair. Here's what to know about ...

"If reproduction is ever to occur beyond Earth, it must do so with a clear commitment to safety, transparency and ethical integrity." When you purchase through links on our site, we may earn an ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels ...

Photographer Tim Flach’s new book is unusually personal: it includes images not only of his cat—a regal orange-and-white former barn kitten named Loki—but also of his brain, thanks to MRI scans ...

The story of a once mysterious and until-recently fatal feline disease called feline infectious peritonitis has enough twists and tuns to be a Netflix movie. A treatment for the now-treatable disease ...

SHORELINE, Wash. — Life-saving efforts are underway at shelters and rescues across Washington state. Nationally, several animal-focused organizations are taking part in "Clear the Shelters" efforts.