As used in this article, unless the context otherwise indicates, the following terms shall have the meanings indicated:
Any member of the species Canis, both male and female.
Any person appointed by the Mayor to assist in the enforcement of this article and Article 7 of the Agriculture and Markets Law of the State of New York as therein specified. Such person or persons shall have all of the powers of a peace officer of the State of New York.
Includes any person having the right of property in a dog, any person who keeps or harbors a dog or has in his/her care or who acts as its custodian and any person who permits a dog to remain on or about any premises occupied by him/her.
Any dog, licensed or unlicensed, while roaming, running or self-hunting off the property of its owner or custodian and not under the control of the owner or custodian by a leash not exceeding eight feet in length.