The owner of any rabid animal or clinically suspected rabid animal shall isolate the animal in strict confinement under proper care and under the observation of a veterinarian, in a pound, veterinary hospital, or other adequate facility in a manner approved by the health officer, and said animal shall not be killed or released from confinement for at least ten days after the onset of symptoms suggestive of rabies and until the health officer gives written authorization for the release of the animal, with the exception that such animal may be sacrificed with the permission of the health officer for the purpose of a laboratory examination for rabies using the fluorescent rabies antibody test in an approved public health laboratory. (Prior code § 4647)