Hate them. They stink and you have to pick up their shit after them.
But top of my hate list are the "staffy, pit-bull types" owned my chav clearings in the woods who want to look 'ard. They also seem to enjoy tearing small children and other dogs to bits. Sweeping generalisation I know, but Ive yet to meet one of these dogs and think "what a nice soft doggy, let me rub your tummy"