Fearing that he costs too much to feed, Clifford decides to join a traveling carnival so he can enter a talent contest in hopes of winning a lifetime supply of Tummy Yummies treats. Joined by his friends Cleo and T-Bone, Clifford meets up with Shackleford the High-Flying Ferret and Rodrigo Chihuahua of Steel, as they work together to turn a broken-down act into a record-breaking show.
As Emily struggles to fit in at home and at school, she discovers a small red puppy who is destined to become her best friend. When Clifford magically undergoes one heck of a growth spurt, becomes a gigantic dog and attracts the attention of a genetics company, Emily and her Uncle Casey have to fight the forces of greed as they go on the run across New York City. Along the way, Clifford affects the lives of everyone around him and teaches Emily and her uncle the true meaning of acceptance and unconditional love.
Clifford's Puppy Days is a short-lived animated children's television series that originally aired on PBS Kids from 15 September 2003 to 13 October 2004. A spin-off of the original Clifford the Big Red Dog, it is set before the original series, and features the adventures of Clifford during his puppy days before he grew.
The series was cancelled in 2004 following low ratings. Reruns aired regularly following the cancellation, though they were halted in 2006. Since then, occasional reruns continue to air.
In the UK the show aired on CBeebies.