light brown dog walking along a set of train tracks

light brown dog walking along a set of train tracks. The dog is of medium build and has a curly tail. It appears to be sniffing the ground as it moves. The train tracks are surrounded by green vegetation, and there are buildings visible in the background. One building has a sign that reads "CÔNG TY TRÁCH NHIỆM HỮU HẠN PHÚ NGUYÊN PHONG." The sky is light and appears to be dusk.