dog walker has told how her beloved pet was left 'covered in blood' with part of his paw hanging off after standing on glass on a litter-strewn beach.Graphic pictures show the damage done to Springer Spaniel Ozzi's leg after taking a walk at Erskine beach in Renfrewshire last night.Owner Cara Binnie, from Bishopton, said it was only a king-hearted fellow dog walker that rushed to Ozzi's aid and provided bandages.She said: "We were just out for the daily walk and Ozzi went over to a grass bit