Hip, Hip, Hooray Day! — Barney Saltzberg

Hip knows exactly what she wants for her birthday--a trip to the Royal Roller Rink. She leaves hints everywhere so that her best friend, Hop, can't possibly go wrong with her gift. Or can he? When Hop surprises Hip with disappointing presents--including a coupon for him to sort her socks--Hip is mad. Her birthday is a disaster! It takes their friends Snooter and Peapod to show Hip and Hop that trusting your best friend can bring about the best kind of surprises.
Once again the award-winning creator of Animal Kisses will have readers laughing aloud at the hilarious adventures of an exuberant hippo and a persnickety rabbit who are the unlikeliest of friends.