Apack of adult sabertooth cats could attack and kill a huge bison in minutes. The cats most formidable feature was its terrifying saber-like teeth a pair of cur

An exciting Ice Age animal exploration led by popular adventurer Buddy Davis! Discover elk with antlers over 12 feet long, rhino-like animals that ate plants, �

Seven inch fangs made sabertooth cats a formidable ice age animal. Awesome illustrations accompany carefully leveled text about food, habitat, life cycle, and e

The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! Getting the facts behind the fic

The fascinating story of how a harsh terrain that resembled modern Antarctica has been transformed gradually into the forests, grasslands, and wetlands we know