When a mysterious green poop is left behind at Bob McGrew's zoo, Bob is determined to find out who did it! Includes a squishy, sparkly poop that shows through the front cover and on every interior spread. Zookeeper Bob McGrew is back for another poop-filled adventure, this time in board book format! When a mysterious green poop is left behind at Bob McGrew's zoo, Bob is determined to find out who did it. Each one of the animals in the zoo explains why the poop doesn't belong to them in this hilarious rhyming adventure. Who could it belong to? Includes a squishy, sparkly poop that shows through the front cover and on every interior spread.