Ricky Ricotta's Mighty Robot vs. The Mecha-monkeys From Mars (Book 4)

From Dav Pilkey, creator of Captain Underpants, and acclaimed artist Dan Santat, an out-of-this-world friendship adventure with all-new full-color illustrations! Hooray! Today is Ricky Ricotta's birthday, and it is going to be the BEST day ever! As a special treat, Ricky's family is going to the museum to see dinosaurs. But when they get there, an evil space-bunny named General Jackrabbit is creating Jurassic Jackrabbits that will help him take over Earth. Can Ricky and his Mighty Robot beat the big, bad bunnies? Or will this end up being the WORST birthday ever? Originally published in 2002, this edition features brand-new full-color illustrations and mini-comics throughout!