Bucktoothed Builder of Dams
Puzzle 18 of Life of a Book Medium Pack
Question is: Bucktoothed Builder of Dams
and the answer is: BEAVER
Word Meaning:
BEAVER — (countable) A semiaquatic rodent of the genus Castor, having a wide, flat tail and webbed feet, native to the Northern Hemisphere.
Definitions from Wiktionary.