Amber Heard may see over 1.3 million having signed a petition to have her fired from "Aquaman 2," but the 34-year-old actress and ex to Johnny Depp hasn't been sulking under the duvet. Amber was this week photographed hiking the Los Angeles hills during an energetic outing with her dog Birdie, and she was looking fit, healthy, and fantastic. The snaps come as Heard continues to front media outlets in the wake of "Pirates of the Caribbean" star ex Depp suffering legal blows. Check it out below.