While waiting for the man with the yellow hat to buy train tickets, Curious George causes trouble by mixing up numbers on the schedule, but he makes up for it when a little boy's toy rolls toward the tracks.

When the man with the yellow hat tells George that he is planning a surprise, of course George is curious. Before long George finds a hat, noisemakers, decorations, and games. It must be a birthday! But whose birthday is it? That's the surprise!

After the zoo closes, monkey slips out of his cage to explore the zoo, introducing the reader to the other animals and the idea of opposites.

Curious George has a loose tooth and has to go to the dentist.

When Little Monkey decides to venture out into the jungle alone, beyond the gaze of his watchful Mama, he discovers that other animals are not as friendly and warm as his own family and that independence is not altogether a good thing.

George wants ice cream to cool off in the hot weather and so do all the other people.

A butterfly tries to help a lost young monkey find its mother in the jungle, meeting many different animals along the way.

Curious George is invited to a pizza party and the guests are allowed to make their own pizza. Can the party survive George's mess?

George's elephant friend Kayla misses her family--and on this whirlwind adventure, George will stop at nothing to help her find them!