Two years ago the adorable polar bear cub Knut was an international star, photographed by Annie Leibovitz and featured on the cover of Vanity Fair with Leonardo DiCaprio. Today Good Morning America took a look at where the former child star is now, and found that the adult Knut weighs in at 500 lbs, is surly, disheveled, and just looking to find a mate. Which is why the Berlin Zoo is trying to sell him. Clip above.