CMV: All dogs should be muzzled in public.

Dogs are animals, and their behavior – no matter how well trained or disciplined – sinply cannot be predicted 100% of the time. There are any number of things that could provoke a dog to bite, even without a history of biting. There are many types of muzzles available, some less restrictive than others. Dogs could still pant, bark, sniff around, and generally do dog things. Having a muzzle on would impact little besides the probability of someone (or an animal) being bitten.

The only reason I can see reasonably to take off a muzzle would be for food/water. Other exceptions would be working/service dogs.

The biggest drawback I can really think of is that a muzzle would inhibit playing with toys/fetch/etc. As long as unmuzzled activity is occurring within a dog park, I am not so much bothered by it. I think dog park-goers assume a certain level of risk by being there. My argument is more for public spaces that allow dogs, but are not inherently dog-oriented, such as malls, outdoor festivals, park trails, etc.