Seven of the Biggest Beasts of All Time

1. Bull-Size Rodent Discovered -- Biggest Yet



2. Giant "Frog From Hell" Fossil Found in Madagascar

3.Giant Penguins Once Roamed Peru Desert, Fossils Show

4.Giant Sea Scorpion Discovered; Was Bigger Than a Man

5.Ancient Giant Shark Had Strongest Bite Ever, Model Says

6.Giant Prehistoric "Kangaroos" Killed Off by Humans

7.Biggest Snake Fossil Found in Colombia Coal Mine

To find out detailed information, please do visit nationalgeographic.com.