Fun fact: given the lifespan of the average caveman, Fred Flintstone probably died before he was thirty! He'd be very impressed that you can, or have, outlived him! Yes, between Gary Larson and Hanna-Barbera, the book may seem to be closed on "Early Man," but we're here to crack it open and answer all your caveman questions!

freesound.org credits go to "FunWithSound," "audiojacked," "GameBoy," "Npeo," "zepp2010" and "sagamusix"