Prehistoric times were pretty strange, to put it lightly, and the same could be said of the species from that period. Here ...

For nearly 30 million years, a 2,000-pound beast known as the entelodont ruled a sweeping empire from Mongolia to what is now ...

In prehistoric North America ... 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 the plains and forests.