I didn't care for the movie. I grew up reading the books and had my child watch the old Clifford cartoons on PBS then the new version after John Ritter died (didn't care for the new Clifford cartoon, maybe I'm being biased).
When I began the movie, I expected Emily and Clifford's adventures to be on Birdwell Island, not in Big City, USA. It was so weird. And what's with the dumb inept homeless cartoonist uncle? Ugh. He brought nothing to the story. After a while, my kid stopped watching the movie, it began to bore him. The movie bored me too. I had big hopes for this movie only to become disappointed.