Cal. FAC § 18851

It is unlawful for any person engaged in the business of buying, selling, or transporting, in intrastate commerce, dead, dying, disabled, or diseased animals, or any parts of the carcasses of any animals that died otherwise than by slaughter to buy, sell, transport, offer for sale or transportation, or receive for transportation, in intrastate commerce, any dead, dying, disabled, or diseased livestock or poultry, or any products of the animal that died otherwise than by slaughter, unless the transaction or transportation, is made in accordance with any regulations the director may prescribe to assure that the animal, or the part or product thereof, will be prevented from being used for human food purposes, and is in compliance with Chapter 5 (commencing with Section 19200) of this part and Chapter 10 (commencing with Section 113025) of Part 6 of Division 104 of the Health and Safety Code.