You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: CHARACTER ASSASSINATION 
Clue: Air Force gunner Snowden catches some flak & dies in Yossarian's arms, courtesy of this author
heller

Category: ALL ABOUT ANIMALS 
Clue: A type of beetle & a species of seal are named for this large land herbivore
an elephant

Category: POTPOURRI 
Clue: This chess piece that usually looks like part of a castle is sometimes called a castle

rook