Notwithstanding any other provision of this chapter or of Chapter 55, no person owning, possessing, harboring or having the care of a vicious dog shall permit such animal to go unconfined upon the premises of such person or permit the dog to go beyond the premises unless the dog is securely leashed and muzzled. A vicious dog is “unconfined” unless such dog is:
1. Securely confined in a dwelling house.
2. Completely enclosed in a locked, enclosed fence, pen or other structure having a height of at least six feet. Such pen or structure must have secure sides which are imbedded into the ground, if the bottom of the structure is not integrally connected to the structure. If the fence, pen or structure is less than six feet in height, it must have a secure top in addition to securely imbedded sides.
A vicious dog shall not be required to be muzzled when shown in an American Kennel Club show or a show sanctioned by the American Kennel Club or when securely confined in a private vehicle and inaccessible to persons other than those within the vehicle.