In Australia there is an expectation that people keep their cats inside because those little murder machine are able to decimate a significant amount of our native fauna. I was shocked when I moved to the UK for a few years to find out that a typical requirement for getting a cat there through legitimate sources included committing to letting them roam outside.

Guy who used to let his cat out here, the medical costs became too much for us at one point, so we no longer let that orange bastard out. He lost like 4-5 of his 9 lives to cars.