Some time ago, I spent a week as volunteer in one of the nature reserves in the Netherlands, the Boschplaat on Terschelling. We had the privilege to spent 7 days, 24 hours per day in that area in a small cabin. Our job was to make sure no one would enter the salt marsh, which is closed during the breeding season. In most cases this just meant that we were talking to people that came walking by and stopped for a little chat.
In the morning and evenings, there was no one around, so we had the time to ourselves. In the morning I usually made a round to see if I could find some nice tracks. During the night many animals use the dunes around our hut, like European Hare and Roe Deer. But some small tracks attracted my attention. They looked weird, not mammal-like. With a little help, I managed to identify the, as Natterjack Toad tracks, which makes sense, as they occur not too far away in some ponds. We were just surprised to see them this far away from these ponds.