The county department of animal regulation shall not license any dog until it has been vaccinated with canine rabies vaccine by injection or other method approved by the health officer during the time prescribed by state law, or the rules and regulations of the State Department of Public Health, unless the owner or person in possession of the same submits a certificate from a licensed veterinarian issued within the preceding sixty days, stating that, in his or her opinion, the rabies vaccination would be likely to seriously injure the dog. Any dog so excepted from rabies vaccination shall be restricted to the enclosed yard of the owner or person in possession of the same except when held upon a rope, chain or leash. Any violation thereof by the owner or person in possession of such dog is unlawful. (Prior code § 4115.2)