Justin Timberlake & Jessica Biel: Dog Walkers

Justin Timberlake and girlfriend Jessica Biel enjoy an early morning hike with their three dogs in the Hollywood Hills on Tuesday.

Jessica, 26, walked her pit bull Tina while Justin, 27, brought along his two boxers, Buckley and Brennen.

On Sunday, Justin presented the 2008 American Music Awards special Award of Merit to Annie Lennox, honoring her music career.

15+ pictures inside of dog walkers Justin and Jessica…