This film was directed by Robert Ramirez, produced by Scholastic Entertainment and Big Red Dog Productions,[1] and was originally released in theaters for a limited time by Warner Bros. Pictures on February 20, 2004.

Clifford, Cleo, and T-Bone are amazed by "Larry's Amazing Animals," an animal act consisting of Shackelford the High Flying Ferret, Dorothy the High Wire Heifer aka Daring Cow, Dirk the Extreme Dachshund, and Rodrigo, Chihuahua of Steel.

When the trio go to collect their autographs, Shackleford attempts to convince them to join the act, believing Clifford's size and appearance would help revive the group's popularity, but they decline, unwilling to leave their owners.

Since Larry cannot accept animals with owners, Cleo disposes their pet tags, claiming they are to trick dogcatchers and put them in a crate for safe keeping.

After three weeks of success, Larry's Amazing Animals receives entry for the Tummy Yummies contest that will perform the next night.

Hurt by Shackleford's words and missing Emily Elizabeth, Clifford decides to leave early and return home to Birdwell Island.

At the hotel, Shackleford tries to convince everyone Clifford just wanted the Tummy Yummies, prompting Cleo to expose his true intentions.

The site's critical consensus reads, "While a dull affair for parents, Clifford's Really Big Movie should charm its intended preschool audience.

[7] Anna Smith of Empire, gave the film a three out of five stars, stating: "The humour, though, is aimed squarely at the under-tens, so the rest of us will find it a bit bland.

"[8] Peter Bradshaw of The Guardian, gave the film a two out of five stars, saying: "Easygoing and amiable, it is none the less dull compared to the brilliant new players on the scene.

"[10] Nell Minow of Common Sense Media gave the film a 3 out of 5 stars, stating "Charming and harmless.

"[11] During its opening weekend, the film made back $662,152 at the domestic box office in a limited release of 471 theaters.