On the evening walk were some fireman trucks passing by. Because their sirens were on, I stopped and looked at them to give Hz the chance to understand where all this noise is coming from. Instead, though, he started to focus on the other side of the riverbank. Trucks passed by in all their noise and he kept on looking on the other side. It took me couple of seconds to see the origin of his concentration. A fox - standing still like a frozen statue looking right back at us. Short moments after, he disappeared into bushes. My dog could locate that tiptoeing fox even though there was a tremendous noise level around us. Wow - quite a survival skill!