Exclusive Pics: Jennifer Aniston's Dog Days of Winter

The actress shares the screen with Owen Wilson and a rambunctious retriever in Marley & Me, opening Christmas Day

Curmudgeonly cinema legend W.C. Fields always advised: Never work with children or animals. But it seems to be turning out fine for Jennifer Aniston, at least based on these exclusive picks from Marley & Me, where Jen shares the screen with manchild Owen Wilson and attention-hogging pooch Marley.

The flick's not due until Christmas (learn more in our 2008 Holiday Movie Guide gallery, previewed below). But to tide you over, we've got three more exclusive pics on the jump, more than one of which includes extremely cute puppies. So be forwarned before you click to the next page, side effects may include oohing and aahing and that's-so-cute cooing.