19 photos of animals enjoying the nightlife

Tiny orphaned possum snuggles back to life

Sea turtles wear swimsuits for science

Curious whales size up paddleboarder

Satellites provide glimpse of feral cats' ranges

Woman thanks bear for leaving kayak alone ... bear then destroys kayak

Farmer discovers woolly mammoth near Detroit

What makes a yawn contagious?

Say hello to Tofu, a red panda cub who is stealing hearts in Detroit

Tracking British Columbia's secretive sea wolf

Sleepy meerkat can't keep his eyes open

Flea fossil may hold ancestor of bubonic plague