For the purpose of this subchapter the following definition shall apply unless the context clearly indicates or requires a different meaning.
AT LARGE. Off the premises of the owner, and not under the control of the owner or a member of his immediate family either by leash, cord, chain or otherwise. ('81 Code, § 840.1, § 1 (a))
DOG. Any member of the canine family, six months of age or over, male or female.
OWNER. Any person or persons, firm, association or corporation owning, keeping or harboring a dog or cat. ('81 Code, § 840.1, § 1 (b))