As used in this article: “Adequate confinement” means that, while on the property of its owner and not under the direct supervision and control of the owner or custodian, a hybrid canine shall be confined in a humane manner in a securely enclosed and locked structure of sufficient height and design to: (i) prevent the animal’s escape; or if the hybrid canine is determined to be a dangerous dog pursuant to § 3.2-6540, the structure shall prevent direct contact with any person or animal not authorized by the owner to be in direct contact with the hybrid canine; and (ii) provide a minimum of 100 square feet of floor space for each adult animal. Tethering of a hybrid canine not under the direct supervision and control of the owner or custodian shall not be considered adequate confinement. “Hybrid canine” means any animal that is or can be demonstrated to be a hybrid of the domestic dog and any other species of the Canidae family; that at any time has been permitted, registered, licensed, or advertised as such; or that at any time has been described, represented, or reported as such by its owner to a licensed veterinarian, law-enforcement officer, animal control officer, humane investigator, official of the Department of Health, or State Veterinarian’s representative. “Responsible ownership” means the ownership and humane care of a hybrid canine in such a manner as to comply with all laws and ordinances regarding hybrid canines and prevent endangerment by the animal to public health and safety.