I have a rescue German Shepard which I walk twice daily, it never ceases to amaze me when people decide to let their dogs off the leash. The dogs come charging up to a 85lb. GSD and are surprised when he stands his ground and defends himself or me. Their lose dogs jump mine confined to a leash, he defends himself and somehow he is a "vicious" dog? Yes I carry but maybe the pepper spray or stun cane is a good option, don't want to shoot the dog because of their idiot owners....