Hmmm...maybe dogs; so the citizens will not know when the California Reds are coming for them.
It’s here already.
Legal for SF to Ban the Sale of All Pets?
https://blogs.findlaw.com/free_enterprise/2011/06/legal-for-sf-to-ban-the-sale-of-all-pets.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+FreeEnterprise+%28Free+Enterprise%29