Happy Birthday Dog! Dog's friends are planning a surprise birthday party for him, but they don't have a cake! With a little help from Pig, Frog gathers the letters C-A-K-E.but can he them to the party without ruining the surprise? Sh-Sh-Shark! When Duck befriends a Shark, he learns that the letters S and H make the ""sh"" sound, and everyone else discovers that you can't judge a shark by his sharp-toothed cover