Watership Down

A truly epic (used in the actual sense, not the modern sense) book by Richard Adams about of a group of semi-anthropomorphic rabbits who make their way across the English countryside in search of a new home. Though built on a simple concept, it is a grand tale of adventure, full of dynamic characters, intense action, suspense, mythology and mystery. And it's not just a kid's book. Read it, you'll fall in love with the story of Hazel, Fiver, Bigwig, Blackberry, Dandelion, and El-ahrairah.