Robotic lawn mowers running at night have, by some, been declared a great threat to the population of European hedgehogs. Now a recently published study conducted by Dr. Sophie Lund Rasmussen, known as Dr. Hedgehog, and colleagues from Oxford University and Aalborg University sheds new light on the topic. The study shows that different models of robotic lawn mowers vary substantially in their capability to detect and avoid hurting hedgehogs. In fact, certain technical features significantly improve the mowers' safety index.