Paleolithic art of similar lions found on cave walls ... But humans living in ice age North America had to deal with the real thing. Dire wolves (Canis dirus) were a canine species that hunted ...

While the dire wolf lives on in popular fiction and lore, some of today’s wolves are close seconds in terms of their enormous size. Watch to discover which wolf species measure the largest on Earth.

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 ...