Stars & Their Pets: January's Saturday SweetieJones and her pup pound the pavement in Los Feliz, Calif. Plus: Miley and Ashley's high-profile puppy playdate and more

Credit: GSI

Updated: Monday Jul 19, 2010 | 01:41 PM EDT

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MILEY CYRUS & ASHLEY GREENE

It's an all-star puppy playdate! Cyrus and growing puppy Mate hang out with Twilight actress Greene and her tiny toy fox terrier, Marlo, on the set of LOL: Laughing Out Loud in Detroit, Mich., on Friday.