Hippos Go Berserk! (Sandra Boynton)By: Sandra Boynton 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, until an all night party is inevitable. About Author Sandra Boynton is Simon & Schuster's pre school superstar! She has a rare creative talent she writes and illustrates brilliantly and she sells in excess of six million books each year throughout the world. Her unique style