A hedgehog curls up in a garden in Rolleston on the outskirts of Christchurch, New Zealand. As hedgehogs have no natural predators in New Zealand, they are considered a pest because they kill a variety of insects, lizards, and ground-nesting chicks, reducing biodiversity. In Europe, however, hedgehogs are now listed as “near threatened” after a decline in numbers of at least 30% over the past decade across much of their range