Hedgehogs face many dangers. There is a new danger — robot lawn mowers. These are machines that automatically cut the grass in gardens. They are killing hedgehogs in Germany. Mayors in Germany want a ban on using the mowers at night. Hedgehogs curl up into a ball when there is danger, so mowers cannot see them.

German law protects hedgehogs. People who harm them can get a big fine. The animals are on a "near threatened" list. A German mayor wants lawn mower makers to help hedgehogs. She wants them, "to find solutions to ensure that small animals are no longer endangered by robot lawn mowers".