(a) The provisions of this article are in addition to and supplementary of any previously existing laws of this state and shall not be construed to repeal or supersede such previously existing laws.

(b) It is the intention of this article to establish as state law minimum standards and requirements for the control of dangerous dogs and potentially dangerous dogs and to provide for certain state crimes for violations of such minimum standards and requirements. However, this article shall not supersede or invalidate existing ordinances or resolutions of local governments or prohibit local governments from adopting and enforcing ordinances or resolutions which provide for more restrictive control of dogs, including a more restrictive definition of a dangerous dog or potentially dangerous dog, than the minimum standards and requirements provided for in this article.