It drives me nuts when people think that they can just let their dogs roam free. If that happened to me, with the cat in their dogs mouth...well....there would be a 12 gauge waiting...
I'm a dog lover, but when it comes to dogs starting to run free and kill or injure other animals...game over. And I know some may think that it is cruel...but when it comes to destruction of my personal property or peace...usually the county sheriff or humane society understand...