Stars and Their Pets: Josh Hartnett's 'Runyon' BuddyHartnett hits the trails with his mutt in L.A. Plus: Kendra Wilkinson brings a festive furry friend to a red carpet and more

  • JOSH HARTNETT photo | Josh Hartnett

Credit: Jones/S Sharma/Pacific Coast News

Updated: Friday Dec 09, 2011 | 06:00 AM EST

JOSH HARTNETT

The actor and his smiling dog step it up during a workout at L.A.'s Runyon Canyon Park Tuesday.