Originally Posted by Clyde1820

A hard smack on the snout/head of a mad dog is something I've yet to see fail.

True, some "bully" dogs take it as a blood sport and they'll do everything they can to succeed i their "bullying." Like most bullies, though, when smacked down they begin to realize it's not all roses. Just have to connect. A busted jaw, poked eye, smacked temple, torn up nose/lips ... whatever it takes ... makes a big, bad, bully dog re-think.

As for permanence of solutions, well, that's a matter of opinion. One can carry a can of something. One can equally easily carry a baton, cane or stick. A dog that gets hit with a cloud of spray will generally remember it. So will a dog that's found its snout damaged by a wallop by a cane/baton.

IMO, it makes sense to carry both. In the "two is one, one is none" sense. You never know what's going to be needed, or what'll work in a given situation.