Police Scotland seem to have been spectacularly dumb here:
www.dailymail.co.uk
It's one thing perhaps to give words of advice to an owner caught taking an XL Bully out without a muzzle if that's all that's happened, but after taking one out without a muzzle *and* having it attack another dog then surely the owner ought to have been charged.

Moment crazed dog sinks its teeth into pug and refuses to let go
Horrifying footage of the attack in Leith, Edinburgh, yesterday captured the moment the helpless pug wails in agony as it is mauled by a dog more than double its size.
It's one thing perhaps to give words of advice to an owner caught taking an XL Bully out without a muzzle if that's all that's happened, but after taking one out without a muzzle *and* having it attack another dog then surely the owner ought to have been charged.