Tragedy as sledge dog is attacked and killed by polar bear Nature ADORABLE footage of a huge polar bear gently stroking a dog has had a tragic ending. Share: Email ThisBlogThis!Share to XShare to Facebook Related Posts:Boy, 11, left devastated after his dog who stayed by his side after brain surgery vanishesElephant with broken leg saved by Army in dramatic rescue missionTropical turtle 'lucky to be alive' after washing up on WELSH beachElephant with broken leg saved by Army in dramatic rescue missionBoy, 11, left devastated after his dog who stayed by his side after brain surgery vanishes