Stars and Their Pets: Minka's Little Stair MasterKelly's fluffball gets into her Miami set trailer. Plus: Amanda Seyfried and Ryan Phillippe take a hike

Credit: Splash News Online

Updated: Friday Mar 18, 2011 | 06:00 AM EDT

PRISCILLA CHAN

Look who's ready to run! Facebook founder Mark Zuckerberg's leading lady gets her heart racing alongside 2-month-old Beast near their Palo Alto, Calif., home on Sunday.



Sign up for our daily newsletter and other special offers.
    Choose your newsletters
Thank you for signing up! Your request may take up to one week to be processed.
    see all newsletters