Did you know that sea cucumbers use their butts to breathe? Or that the famous red butts of mandrills help them see each other in the jungle?
Butts are used for breathing, eating, swimming and even talking and they come in all shapes, sizes and colors  (some are even multi-colored!).
Learn fun facts about your own bottom and those in the animal kingdom in this hilarious book of butts!
También disponible en español. (Also available in Spanish.)