Chapter 4. Regulation of California Food And Agricultural Code >> Division 14. >> Chapter 4.

It is unlawful for any person to own, harbor, or keep any dog over the age of four months, or to permit such a dog which is owned, harbored, or controlled by him to run at large, unless the dog has attached to its neck or leg a substantial collar on which one of the following is fastened:
  (a) A metallic tag which gives the name and post office address of the owner.
  (b) A metal license tag which is issued by the authority of a county, city and county, or any municipal corporation for the purpose of identifying the dog and designating the owner.

It is unlawful for any person to attach a license tag to the collar of any dog except the dog which is described in the application for such license tag.

Except as otherwise provided in this division, it is unlawful for any person to kill, injure, or impound any dog, if the owner of the dog has complied with the provisions of this division.

It is unlawful for any person to permit any female dog which is owned, harbored, or controlled by him, to run at large at any time during the period when the dog is in heat or breeding condition.

It is unlawful for any person to permit any dog which is owned, harbored, or controlled by him to run at large on any farm on which livestock or domestic fowls are kept, without the consent of the owner of the farm, except for herding livestock, hunting or sporting purposes, or any competitive trials when the dog is within reasonable control or call of his owner or the agent of his owner.

In an action for violation of Section 30955, the court may stay imposition of a sentence and order the defendant to compensate the owner of the farm in an amount equal to the cost of the damage done by the defendant's dog. If the defendant refuses to compensate the owner under this section, the court shall impose the appropriate sentence. Acceptance by the owner of compensation under this section precludes that person from bringing an action under any other law for damages caused by the defendant's dog.