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 ...

He’s picture grr-fect. An infant black bear that was found orphaned, sickly and starving in a California national forest is ...

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 ...

Male and female live-bearing ... and that's important for understanding big-picture evolutionary patterns. Researchers Michael Tobler, associate professor of biology, and Zach Culumber, former ...

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.

(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 ...

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 ...

Montrose area wildlife biologist Evan Phillips captured images of the rare piebald cow elk while on a survey flight in the southwestern part of the state, the Colorado Parks and Wildlife said in a ...