"Discover everything there is to know about all kinds of farms, from the powerful John Deere machines that work the fields to the amazing animals that live there. Did you know? Combines can harvest enough wheat in 9 seconds to make 70 loaves of bread! Why do pigs roll in the mud? They do it to cool off! The spots on a Holstein cow are like fingerprints--no two cows have the same pattern. Jam-packed with colorful photos and incredible facts from the...