Cal. Bus. & Prof. Code § 4858.2
(b) Continuing education hours for registered veterinary technicians shall be earned as follows:
(1) Attending courses provided by those specified in subparagraphs (A) to (D), inclusive, of paragraph (1) of subdivision (b) of Section 4858.1 or sponsored or cosponsored by one of the following:
(2) Up to 4 hours of the required 20 hours of continuing education may be earned by doing either of the following, or a combination thereof:
(B) Up to two hours may be earned by performing pro bono animal health care tasks related to spaying or neutering services for a public animal control agency or shelter, society for the prevention of cruelty to animals shelter, humane society shelter, or rescue group in compliance with the following: