Cute movie!
I took 7,6 and 3 Yo to see it, we loved it! Very funnny, the real dog was a hit! Jim Belushi was good. Don't look for oscar performances - it's a fun movie to enjoy with the little ones.
It doesn't appeal to me, but if I had children I would definitely go, especially considering the oft-dire quality of family entertainment (outside of Pixar).