From the moment when one hippo calls his friends over for a party to the climactic moment when all the hippos really do go berserk, the action in this funny boo

One hippo, all alone, calls two hippos on the phone. So begins Sandra Boynton's classic counting story, Hippos Go Berserk! Exuberant hippopotamus guests show up

One hippo, all alone, calls two hippos on the phone. So begins this counting story, in which exuberant hippopotamus guests show up in ever-increasing numbers, u

Hilarious hippos make a party out of counting in this Sandra Boynton board book classic first published more than forty-five years ago. Exuberant hippopotamus g

You hear your door come crashing down—those birthday monsters are in town! And they're going to wreak havoc in the most extraordinarily rude ways. What fun! F