As used in this article, the following terms shall have the meanings indicated:
Any dog, bitch or spayed bitch.
Any dog which has attained the age of seven months or which possesses a set of permanent teeth.
Any establishment wherein or whereon the business of boarding or selling dogs or breeding dogs for sale is carried on, except a pet shop.
When applied to the proprietorship of a dog, includes every person having a right of property in such dog and every person who has such dog in his keeping, or harbors the same.
Any room or group of rooms, cage or exhibition pen, not part of a kennel, wherein dogs for sale are kept or displayed.
An establishment for the confinement of dogs seized either under the provisions of this article or otherwise.
Any establishment where dogs are received, housed or distributed without charge.