Te Papa Museum in Wellington had this amazing display that contained all the base species considered native to NZ. . . sort of a New Zealand starter kit.

With the exception of bats, there are no mammals in the display. So in this primordial version of Aotearoa (some imaginary pristine NATURE that only exists in a Kiwi’s brain), mammals don’t exist. Hence any critter that stowed away and slipped onto the island (with the exception of cattle, sheep, and a few tolerable pets, of course), are considered invasive. Stouts, ferrets, possums, rats, bunnies, etc. are public enemy number one. They must be eradicated.