Unless you as well as your dog are in a fully contained area, you should always use a dog leash and collar.As most cities have leash laws in place, it is normal to see many dog owners walking their dogs on a leash. It’s not only looking good, but it’s also the law. Laws requiring the use of a leash protect both the dog as well as the dog owner against any mishaps.More dogs roaming off-leash can be seen as one travels out of the city s well as into the suburbs. It is much usual to see dogs without collars and leashes, in rural farm settings.