I can tolerate dogs if they're socialized not to jump on or slobber all over me... basically if they leave me the hell alone. However, some dog-owners are some of the most revolting humans around. Specifically, the ones who think their ownership of a dog is license to let it run wild in public and the ones who expect everybody to lavish love and attention on their dog and do not even consider that others might be disturbed by them. I don't give a crap how "sweet" the dogs are and I can do without their friendliness. E.g. a party I've been to where the owners just left their huge, smelly dog to pester me and only put it away hours later when the dog became aggressive.