Clifford's Puppy Days is an animated children's television series that originally aired on both PBS and PBS Kids from September 15, 2003 to October 13, 2004. A prequel to the original Clifford the Big Red Dog, it features the adventures of Clifford during his puppy days before he became a big red dog and before moving to Birdwell Island. 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.