I’ve got a dog, but see too many not properly under control. Two issues I see a lot:
Large dogs often bought for security, very defensive of their owners, with owners who appear to have little control over them. Eg a GSD snarled and snapped at us the other day, quite frightening. Owner had headphones on and not even looking at dog.
Dog walkers with several dogs. I don’t think anyone could control multiple dogs in a dangerous situation, particularly large powerful breeds. I know from experience that some will take dogs they have litttle prior knowledge of e.g. their recall, likelihood of aggression, etc.
I’d support licensing, but it needs to be enforced, and tbh I doubt we have the police/dog warden resources to make it work. I think number of dogs per person outdoors and also per household should be limited, maybe to 3 or 4?