By Rory Cassidy & John-Paul Clark & Antony Clements-Thrower A vicious XL Bully was shown with its jaws clamped around the head of another dog in footage too sickening to show. The incident unfolded on Irvine High Street, Ayrshire, on Wednesday when the animals’ owners were arguing. The XL had been wearing a muzzle which fell off, allowing the beast to clamp its mouth around the head of the golden retriever. In the clip, which is too distressing to share, at least seven people can be seen trying to break the dogs apart with men raining kicks and punches on the dog in an attempt to bring the att…