When his mother brings home a guinea pig instead of the dog he has always wanted, fifth-grader Rufus is not happy--until the rodent starts acting exactly like a dog.

While Gizmo continues his quest to take over the world, Wedgie and his best friend, a micro-pig who lives next door, team up to stop him.

Two guinea pigs escape from their safe but boring cage and have an adventure in the tunnels of the family's pool table.

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

Wedgie and Gizmo's humans are taking their first family vacation--to a campground by a lake! And their pets are too destructive to stay home alone. Wedgie the corgi is super-excited. He can't wait to chase squirrels and poop in the woods! But Gizmo, the evil genius guinea pig, has no time for games. He must convince the forest critters to join his Evil Horde and help him take over the world--one tent at a time. Muh-hah-hah!--

As Christmas nears, Amy and her friends in the Critter Club try to find a home for two adorable guinea pigs.

When the kindergarten classroom gets a pet guinea pig Eliza is afraid, but when the guinea pig gets lost, Eliza helps find her.

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.

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

Charlie the guinea pig becomes a Hollywood star but finds that stardom does not compare to the comforts of home.