Dire wolves (Canis dirus ... It was flightless, but a great swimmer, with black and white markings that resemble penguins. In fact, the auk is a member of the razorbill family, and not a penguin ...

For most animal biologists, seeing an all-black variant of their studied species would be a once-in-a-lifetime experience. But in North America, especially in Yellowstone National Park where a large ...

Jack Tseng, a paleontologist from the American Museum of Natural History, explains that the dire wolves featured in the show are based on real animals. Produced by Kevin Reilly. Additional camera ...