No doubt this yarn enthralled Larry and Meg Kasdan's dinner guests, but onscreen the crisis seems dull and inconsequential, in part because the quest for the dog is essentially a MacGuffin that drives the blah 'real' story about marital reconciliation.
This is a movie that all but licks your face and begs you to like it, and you'll find yourself wanting to oblige. But it's just too structured and seems overly concerned with conveying a sense of real time . . .