As used in this article, the following words and terms shall have the following meanings:
Any dog:
Which, when unprovoked, approaches any person upon the streets, sidewalks or on any public grounds or places in a vicious or terrorizing manner or in any apparent attitude of attack.
With a known propensity, tendency or disposition to attack unprovoked, to cause injury or to otherwise endanger the safety of human beings or domestic animals.
Which bites, inflicts injury, assaults or otherwise attacks a human being or domestic animal without provocation on public or private property.
Notwithstanding the foregoing, no dog may be considered to be a dangerous dog by reason of any injury or damage sustained by a person when such person was teasing, tormenting, abusing or assaulting the dog or was committing or attempting to commit a crime; any injury or damage sustained by a domestic animal which, at the time such injury or damage was sustained, was teasing, tormenting, abusing or assaulting the dog; or any injury or damage caused by the dog in protecting or defending a human being within the immediate vicinity of the dog from an unjustified attack or assault.
Any person other than the owner of a dangerous/vicious dog who harbors or has in his or her possession a dangerous/vicious dog or manages, controls or cares for a dangerous/vicious dog.
Any person or legal entity having a possessory property right in an animal or who harbors, cares for or exercises control over an animal or knowingly permits an animal to remain on premises occupied by him.
Outside the confines of a residence or commercial structure commonly occupied by human beings or an enclosure of at least six feet in height with secure sides, top and bottom or, if there is no bottom, with sides which extend at least one foot underground, and which shall be locked and designed to prevent the escape of the animal or the entry of young children.
Any dog owned, harbored or trained primarily or in part for the purpose of dog fighting;
Any dog owned, harbored or trained primarily or in part for the purpose of attacking a human being or domestic animal upon command; or
Any dog known by the owner to be or identifiable as in whole or in part of a breed commonly known as a "pit bull," which shall include dogs wholly or partly of the breeds known as "American Staffordshire terrier," "American pit bull terrier," "bull terrier" and "Staffordshire bull terrier," but shall not include any purebred dog of the breed "bull terrier" or "Staffordshire bull terrier" which is registered as such with the American Kennel Club.