Mercer Mayer

Professor Wormbog's zoo won't be complete until he finds a zipperump-a-zoo but he seems to be looking in the wrong places.

Little Critter and his family observe various animals at the zoo.

Little Critter learns all about bicycle safety. Includes activities.

When Mom and Little Sister go to town, Little Critter and his dad share a day of fun involving playing games, meeting new friends, and preparing a special surprise for their return home.

During their car trip to Lake Wakatookee, the Critter family introduces the letters from A to Z.

Six stories about Little Critter and the members of his family.

Little Critter's morning goes from bad to worse when he wakes up late, can't find his favorite shirt, and misses the school bus, but his teacher knows just how to cheer him up. Includes activities.

Two friends experience the vicissitudes of friendship.

"Litter Critter loves being first--even if it hurts his family and friends. After several missteps, Little Critter learns that the secret to getting along is treating others the way he wants to be treated--which, in Little Critter's case, means letting someone else be first"--