With their spectacularly enlarged canines, sabertooth cats are among the most popular of prehistoric animals, yet it is surprising how little information about them is available for the curious layperson. What’s more, there were other sabertooths that were not cats, animals with exotic names like nimravids, barbourofelids, and thylacosmilids. Some were no taller than a domestic...(展开全部)

Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure where they meet woolly mammoths, cave people...and fierce sabertooth tigers!

Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure where they meet woolly mammoths, cave people...and fierce sabertooth tigers!