The latest tactical error on the part of Jim Henson Pictures brings an extraterrestrial dog to our planet to see how Earth canines are doing in their mission to exert control over humans. The verdict: not good, for the pups or us. The movie's send-ups of doggie behaviors seldom transcend the obvious (Sometimes they pass gas!), and the pooches' poorly animated lip "movements" are synched to lazy and/or shrill voice-overs by Matthew Broderick, Brittany Murphy, and other miscast bipeds. Most of the few bright spots come courtesy of young Liam Aiken, who plays the alien emissary's new owner with refreshing sincerity. When the kid is the best thing in a dog movie, you know somebody's been barking up the wrong tree.