Stars and Their Pets: Britney Spears's Little BuddySpears totes a pint-sized pup around Thousand Oaks, Calif. Plus: Naomi Watts's city stroll and more

JUSTIN LONG & AMANDA SEYFRIED

After a pit stop at the dog groomer on Saturday, the new couple spends some more quality time with the actress's other main man, Finn, at a Los Angeles park.