When Fluffy the class guinea pig goes home with Wade for the weekend, Wade loses a tooth and Fluffy learns about the Tooth Fairy.

Brian and Bob are best friends at the pet store until one gets adopted, and they wonder if they will ever see each other again.

The Worrier visits Felix night after night, reminding him of what could go wrong the next day, until the night that a special birthday present changes everything.

Felix feels bad and does not want to eat or play, so his mother takes him to Doctor Duck, who makes everything better.

Fluffy the guinea pig suffers many humiliations at the hands of the students in Ms. Day's classroom.

Fluffy the guinea pig accidentally accompanies Ms. Day's class on a field trip to the planetarium.

A guinea pig tells her child the true story of giant guinea pigs that lived in Venezuela about eight million years ago.

When Ms. Day's class takes a field trip to an apple orchard, Fluffy the guinea pig goes along, but will he ever get to eat his apple?

Groundhog Dog inspires the class to celebrate Groundpig Day with their guinea pig Fluffy, and Fluffy gets to help an unhappy groundhog.

A young guinea pig explains that self-confidence comes from learning new things without being afraid of making mistakes and to remember that everyone has different qualities that make them lovable.