Adelaide, South Australia, have placed the ultimate restrictions of cat ownership. They lead the world in this regard. Aussies see cats both domestic and feral as a pest when it comes to their relationship with native flora and fauna. Some local authorities are ahead of others in restricting cat ownership freedoms in order to protect native species and the administrators of Adelaide, Australia have probably gone as far as any jurisdiction can to restriction cat ownership.  The long-suffering cats and their owners have to desex, microchip, register with the authorities and confine to their home all domestic cats. We all understand the rules but are they genuinely enforceable? They probably don't have to be as 99% of Adelaide's residents will probably willingly comply because they've been indoctrinated with the notion that domestic cats are a massive threat to native species while ignoring the greater threat from humans (increased human population leading to more settlements