Cal. Bus. & Prof. Code § 4827
(a) Nothing in this chapter prohibits any person from:
(1) Practicing veterinary medicine as a bona fide owner of one’s own animals, except for the procedures specified in Section 4826.8. This exemption applies to the following:
(5) Providing the following care to animals lawfully deposited with or impounded by a shelter not registered with the board pursuant to Section 4853:
(b) For the purposes of paragraph (5) of subdivision (a):