At the side of a railway track on the outskirts of Frankfurt, Cocker Spaniel Monte is enthusiastically sniffing the ground, his long furry ears flopping around his nose. When he finds what he is looking for, he obediently stops, sits and is delighted to receive a treat from his trainer.
Dogs help German rail operator sniff out protected species thelocal.de - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thelocal.de Daily Mail and Mail on Sunday newspapers.