Caca. Poop. Number two. Kids have a thousand names for it. Don’t they want to know where it comes from? The Fantastic Voyage of Señor Caca shows kids the hows and whys.A smart wolf in a lab coat leads kids on a journey through their digestive system. A little girl eats an apple for a snack (crunch, crunch), and the apple drops into the esophagus (glug, glug) before a stop in the stomach. At each stop along the way the wolf explains in simple scientific terms what the body is doing. After the pit stop in the stomach, what remains of the apple must enter the small intestine (gurgle, gurgle), then the large intestine, and finally . . . well, you know. Hint: It doesn’t smell like roses here.This delightful book marries Angèle Delaunois’ kid-sized scientific text with Marie Lafrance’s joyful kinetic illustrations to teach children what really does go on inside their bodies.