In the book, young Trixie Willems realizes that her classmate Sonja has the same type of "Knuffle Bunny" stuffed toy rabbit that she does.

When the jealous girls begin arguing, their teacher, Mrs. Greengrove confiscates the stuffed bunnies, returning them at the end of the school day.

Newsday's Sonja Bolle praised the book for its "inventive illustration style" and said, "Anyone who fell in love with the first 'Knuffle Bunny' two years ago will pounce on this sequel, even if they've grown up since then.

"[2] Leonard S. Marcus of the New York Times Book Review added, "Willems has a brilliant knack for exposing early childhood's developmental pivot points, and for lampooning the best efforts of today's hip but hapless parents to do the right thing.

"[3] Kirkus Reviews wrote "Too often, sequels come off as obviously calculated attempts to cash in on success; this offering, with its technical brilliance and its total and sympathetic understanding of the psychology of the preschooler, stands as magnificent in its own right.