Zookeeper Bob McGrew cares for lots of animals, which also means lots of poop-scooping, including "gobs of gnu poo, bouncy kangaroo poo, / a dotted line of droppings from a fat wombat!" But his routine is interrupted when an iguana escapes its habitat and goes on an eating binge, devouring cakes, pizza, and more (even fireflies, for "something light"). Then Bob notices the iguana's subsequent poo is, unbelievably, glowing d he decides it must be from outer space. Word of the luminous leavings spreads, and they become a major attraction, eventually drawing interest from an enthusiastic poo-collector who buys the dung for his poo museum, enabling Bob to purchase a much-appreciated robotic poop-scooper. Colorful, cartoonish illustrations depict the zoo setting and humorously expressive animals with playful details, while the narrative's rhythm and rhymes keep things peppy. The scatological scenarios are certainly copious, though blatantly hyperbolic, including the museum's seemingly endless array of apothecary jars with labeled specimens, featured on the endpapers. The title alone will be enough to get this chuckleworthy book in the right hands.