European hedgehog in New Zealand

The European hedgehog (Erinaceus europaeus) was brought to New Zealand by British colonists in the 1870s as a way to deal with insect pests that had hitched a ride on crops the colonists had brought from their homeland for farming. Long regarded as a gardener's helper in Britain, the introduction of hedgehogs seemed to be a good solution to the lack of natural predators for the pests in New Zealand.

Source: Wikipedia — European hedgehog in New Zealand (CC BY-SA 4.0)