Haven't had a cat for a couple of years now. Here you are not allowed to let your cat/s roam.
That makes good sense to me. I have watched a number of YouTube videos about invasive species in Australia. The one I watched was on Arabian camels which are a big problem. But I did a little online look at Australia's invasive species problem and found this...
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Australia has a
significant problem with invasive species, which threaten native wildlife, ecosystems, and agriculture. Over
3,000 non-native species have been introduced since European settlement, and many have caused
severe environmental damage.
Major Invasive Species in Australia
- European Rabbits → Introduced in the 1800s, they destroy vegetation, compete with native animals, and contribute to soil erosion.
- Feral Cats → Responsible for the decline of many native species, including small mammals and birds.
- Red Foxes → Introduced for hunting, but now a major predator of native wildlife.
- Carp (Fish) → Overpopulating waterways, disrupting ecosystems, and contributing to blue-green algae blooms.
- Feral Pigs → Destroy crops, wetlands, and even eat sea turtle eggs.
- Phytophthora (Plant Disease) → Affects over 200 native plant species, causing widespread damage.
Impact & Control Efforts
- The Australian government spends billions on invasive species management.
- Biological control methods, like introducing viruses to control carp, are being considered.
- Programs to eradicate or manage populations of invasive animals are ongoing.
Invasive species are one of the
biggest threats to Australia’s biodiversity, affecting
82% of threatened species. The challenge is
preventing new introductions while managing existing ones.
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Interesting how feral cats was listed as number two in problem invasive species in Australia. It sounds like fining owners for letting their cats roam is an appropriate measure to combat the feral cat situation.

I come from a family of hunters. Grandpa used to bring rabbits home in the winter when other game was not in season. I wonder how many invasive species can be harvested as food for people, or livestock? There seems to be a real problem with people accepting to eat certain types of animals for their meat. But maybe it could be ground up and used as dog food, or livestock protein?
Although I believe in dispatching an animal with minimal trauma, those invasive species kill off entire species of native animals with no concern. We have a big problem with feral hogs here in the US, and it's only getting worse each year. Even massive hunting programs don't seem to slow the spread of feral hogs. Anyways, I think your no roaming cats' program in Australia is a reasonable approach to curb the feral cat problem.
Maybe you guys could resurrect the native Tasmanian tiger from DNA and use it to control feral cats? I hear it's a possibility!

I love watching those YouTube shows on the thylacine sightings and debate on if they are truly extinct, or just so limited in numbers that they cannot be verified as still alive. I think it would be great to see a native species used to control an invasive species. It's too bad they were hunted to extinction by man, but maybe we can bring them back from the dead? Can we correct our wrongs?