[fault_lines]

Is there evidence that cats are actually a problem for local wildlife in NZ? Which species are under threat?

I've found this belief is common, and it may well be true in some places (including NZ), but it's not true in many, too. In the UK for example there's no evidence to suggest cats are a problem for bird populations[1]. There is a lot of wild extrapolation going on with this subject.

Often I see people quoting statistics such as an absolute number of bird deaths caused by cats, not really understanding that you can't tell from just that statistic whether or not the species are under threat.

[1] https://www.rspb.org.uk/birds-and-wildlife/advice/gardening-...