1911 Encyclopædia Britannica/Behemoth
BEHEMOTH (the intensive plural of the Hebrew b’hemah, a beast), the animal mentioned in the book of Job (ch. xl. 15), probably the hippopotamus, which in ancient times was found in Egypt below the cataracts of Syene. The word may be used in Job as typical of the primeval king of land animals, as leviathan of the water animals. The modern use expresses the idea of a very large and strong animal.