Biologist Stephanie Stack says the images clearly show one male humback penetrating the other. (Lyle Krannichfeld and Brandi Romano) Then, she says, one of the photographers asked: "Are you sure ...

Fans of a prominent female grizzly in Grand Teton National Park were saddened to learn Wednesday that two of her three ...

A biologist tracking whales in the Norwegian fjords, a vast telescope pictured below breathtaking skies and a scientist ...

A male (silver) and female (brown ... David Tipling / Education Images / Universal Images Group via Getty Images Few biologists thought the snake clitoris was anything worth studying.

After a spell, a senior male lifts his head and turns from the ... a research associate at Stanford University's Center for Conservation Biology. "These calls show us that there's much more ...

(WHDH) — Wildlife biologists have caught a new species of gigantic Suwannee alligator snapping turtle, including a 100-pound male. The biologists were checking hoop-net traps in the New River in ...