California Code, Penal Code - PEN § 597k

Anyone who, having care, custody or control of any horse or other animal, uses what is known as the bristle bur, tack bur, or other like device, by whatsoever name known or designated, on such horse or other animal for any purpose whatsoever, is guilty of a misdemeanor and is punishable by a fine of not less than fifty dollars ($50) nor more than five hundred dollars ($500), or by imprisonment in the county jail for not less than 10 days nor more than 175 days, or by both such fine and imprisonment.