Mr. Watson's usual Saturday drive in his Cadillac with his favorite pig, Mercy, turns into an adventure when an unexpected passenger shows up in the back seat and Mercy finds herself behind the wheel.

Stink Moody, friends Webster and Sophie, and Mrs. Birdwistle visit tourist attractions in Virginia as they try to give away 101 guinea pigs rescued from a laboratory, although Stink is very reluctant to give away his favorite, Astro.

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.

Piggie introduces her reluctant friend, Gerald the elephant, to the wonderful world of pretend.

A friendly lion escapes from the local zoo and Pig Pig wants to keep him.

Questions and answers show the reader that different kinds of hugs can be the answer for many situations.

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.

Little Oink is a neat little pig, but his parents will not allow him to play until he is messy, as pigs should be.

All week long the pigs help out around the farm in unexpected ways.

By admiring her finer points and showing that she can take care of herself and have fun even when there's no one else around, a charming pig proves the best friend you can have is yourself.