California Code, Health and Safety Code - HSC § 121855

If, during inspection upon arrival any wild animal is found to be diseased, or there is reason to suspect the presence of disease that will or may endanger the public health and safety, the diseased animal, and, if necessary, the entire shipment shall be destroyed by or under the supervision of the enforcing officer, unless the public health and safety will not be endangered by its detention in quarantine for a time and under conditions satisfactory to the enforcing officer for disinfection, treatment, or diagnosis, or no detriment can be caused by its return to point of origin at the option and expense of the owner or bailee.