California Code, Health and Safety Code - HSC § 122145

A pet dealer shall maintain a written record on the health, status, and disposition of each dog and each cat for a period of not less than one year after disposition of the dog or cat. The record shall also contain all of the information required to be disclosed pursuant to Sections 122140 and 122220. Those records shall be available to humane officers, animal control officers, and law enforcement officers for inspection during normal business hours.