Hatch an Egg (Bobo and Pup-Pup)

"It's a bird. It's a plane. It's an egg falling from the sky? Best friends Bobo and Pup-Pup will discover what's inside once it hatches. But wait...how will they help the egg hatch? Is it even an egg? Find out as they work together and discover a surprise while readers are in on the joke."--Provided by publisher.