An uproariously funny cautionary tale from bestselling picture book phenoms Mac Barnett—the National Ambassador for Young People’s Literature—and Adam Rex!

Some interesting facts about blue whales: A blue whale is longer than thirty dogs lined up nose to tail. Its tongue weighs as much as four hundred cats. Consequently, blue whales make terrible pets...just ask Billy Twitters. When his parents threaten to teach him responsibility by giving him a whale, Billy isn't worried: 'It's not like you can just have one delivered to your house overnight.' But he's wrong. It arrives via FedUp (motto: 'Delivering Punishment Worldwide'), and it's up to Billy to take care of it!

"Tons of fun."—Publishers Weekly

Don't miss these other books by Mac Barnett!

Chloe and the Lion
How This Book Was Made
Rules of the House
On No! (Or How My Science Project Destroyed the World)
Oh No! Not Again! (Or How I Built a Time Machine to Save History)