After being forced to give up his pet fox Pax, a young boy named Peter decides to leave home and get his best friend back--

Separated from his owner, Henry Huggins, in a shopping center parking lot, an ordinary city dog begins a string of bewildering adventures.

While his human Elliot adjusts to his new home and stepfamily, Gizmo, an evil genius guinea pig, searches for a new evil lair where he can plot to take over the world, but Gizmo is constantly thwarted by Elliot's little stepsister Jasmine (who likes to play dress-up), Abuela (who may or may not like to eat cavies), and Wedgie (a Corgi superhero and Gizmo's nemesis).

Biscuit the puppy finds his own way to help feed the pets at Mr. Gray's Pet Shop.

When Henry adopts Ribsy, a dog of no particular breed, humorous adventures follow.

Ernest enters his talented crocodile in the school pet show.

When summer arrives, Humphrey, the pet hamster of Longfellow School's Room 26, is surprised and pleased to learn that he will be going to Camp Happy Hollow.

A child takes a sloth named Sparky as a pet.

Each animal arriving from the zoo as a possible pet fails to suit its prospective owner, until just the right one is found. Movable flaps reveal the contents of each package.

At first, the dinosaurs try to bring home all manner of wild beasts, but in the end, they learn to bring home an appropriate animal from a shelter or pet store and to love and care for it with attention.