Cal. Health & Safety Code § 122317
(a) A person or business that sells or provides a dog for use as an emotional support dog shall provide a written notice to the buyer or recipient of the dog that states all of the following:
(b) A person or business that sells or provides a certificate, identification, tag, vest, leash, or harness for an emotional support animal shall provide a written notice to the buyer or recipient that states all of the following: