Scientists have documented same-sex behavior in many animals. Learn what it means, how it varies, and why human labels can mislead.

Imagine encountering a crocodile so rare that scientists once believed it no longer existed in the wild. This is the reality ...

Scientists are warning that great white sharks may be quietly establishing a breeding population in the Mediterranean, based ...

Like all new parents, Arthur Zey and Chase Popp think their son Dax is the most perfect baby in the world. But they don't attribute their son's temperament to their paternal instincts alone.

A NASA image of the snow-dusted Grand Canyon has created a striking optical illusion, making the vast chasm-more than a mile ...

State fish and game officials declared mountain lions in the Central Coast and Southern California threatened under the state’s endangered species act.

The disappearance of crows is not just about losing a familiar bird. It reflects a broader pattern of urban ecological simplification — cities becoming hostile to unscripted life ...

Only 0.1% of wild salmon eggs survive the lifecycle through alevin, fry, parr, smolt and kelts, and their 5,000-mile swim downstream, across the Atlantic, and back again to spawn where they were born ...

On a remote island in North Macedonia, male Hermann’s tortoises outnumber females 19 to 1, an imbalance driving the ...

Lawmakers in the state House of Delegates passed a bill Thursday that, as amended, will make having sexual contact with an animal explicitly illegal in West Virginia for ...

Zoo staff say the female hawk and female turkey vulture share food, preen each other and have even attempted to raise eggs.

Scientists at Michigan State University have uncovered the molecular “switch” that powers sperm for their final, high-speed dash toward an egg. By tracking how sperm use glucose as fuel, the team ...