Today, NBC’s “The Biggest Loser” host Alison Sweeney and Hill’s Pet Nutrition, makers of  Science Diet® and Prescription Diet® pet foods, kick-off the Million Pound Pledge – a national call-to-action for pet owners to help their cats and dogs lose weight and get back on track to living a happy, healthy lifestyle. Join Alison in taking the pledge by visiting www.PetFit.com through March 30 and enter for the chance to meet her at “The Biggest Loser” live finale in May.