Just So Stories (Everyman's Library Children's Classics Series) by Rudyard Kipling

Kipling's own drawings, with their long, funny captions, illustrate his hilarious explanations of How the Camel Got His Hump, How the Rhinoceros Got His Skin, How the Armadillo Happened, and other animal How's. He began inventing these stories in his American wife's hometown of Brattleboro, Vermont, to amuse his eldest daughter--and they have served ever since as a source of laughter for children everywhere.