Writer-artist Norman Bridwell's Clifford, the Big Red Dog, was brought to television by Scholastic Productions and independent producer Mike Young in 2000. The series lasted 2 seasons, spread out over 3 years (2000-03), followed by a prequel series, Clifford's Puppy Years.
Clifford (John Ritter) is the family pet of the Howards, and more specifically, is owned by Emily Elizabeth Howard. When not with the family, Clifford is on various misadventures with his canine friends. Ritter's passing in 2003 may have been what put an end to the series, although Scholastic & PBS could've arranged for the British cast to take over if needed. Yes, they had a separate cast for British broadcasts of the series. I just don't get it.
"Welcome to Birdwell Island" explains how the Howards moved from the city to the island.
It does look like a form of flash animation, doesn't it? Taking the original character designs that Bridwell created and transferring them onto a computer to animate them was meant to be the hook for the kids that were reading the original books.