As used in this article:
Includes any dog, bitch or spayed bitch.
Includes any dog which has attained the age of seven months or which possesses a set of permanent teeth.
Includes 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 shall include every person having a right property in such dog and every person who has such a dog in his keeping.
Includes any room or group of rooms, cage or exhibition pen, not part of a kennel, wherein dogs for sale are kept or displayed.