A man who took shocking footage of a dog walker being attacked by a bull mastiff today (Weds) claimed he had complained to police about the animal 'loads of times'.<br /><br />Meeran Hassan's CCTV camera picked up the sickening attack in Sheffield, South Yorks., on Tuesday afternoon.<br /><br />The video shows a man, in a blue fleece and dark trousers, trying to protect his own small black dog as a larger, tan-coloured canine appears to snap at his arm.
