Germany is living up to its environmentally-friendly image by spending millions of euros on building bridges just for animals. Humans caught crossing them face a €35 fine. More than a hundred wildlife bridges are to be built in the next decade. Gerhard Klesen, a forester employed by the Ruhr Regional Association, spent a decade campaigning for an animal-only bridge to be built over a motorway in the town of Schermbeck in North Rhine-Westphalia. Man-made barriers such as roads and canals restrict animals’ natural movement, he said. That limits genetic diversity, which in turn leads to an increase in disease and...