The Stud Book of the Appaloosa Horse Club as approved by the Appaloosa Horse Club shall be recognized as the sole official registry for Appaloosa horses. The Stud Book of the Arabian Horse Registry of America, Inc. shall be recognized as the sole official registry for Arabian horses. The board shall, however, by rule provide for the registration of California-bred Appaloosa horses and Arabian horses to enable compliance with this chapter.
Source:
Section 19566.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=BPC§ionNum=19566.5..