There are, of course, the famous descriptions of two such monsters from the Old Testament, Behemoth and Leviathan (Job 40:15-41:34), Behemoth being a giant vegetarian that lived on the fens, and Leviathan a somewhat more terrifying armour-plated amphibian whom only children and the most foolhardy would want as a pet. The Egyptians knew Behemoth by the name p'ih mw,1 which is the same name, of course. Leviathan was similarly known as Lotan to the men of Ugarit.2
