Sense of snow

Traces in a fresh snow make me want to play sherlock holmes. Which animal left them? Or shoe prints... what kind of sneakers did he/she wear, did he run or walk slowly, and where did he go? What a delicious mystery to think about during an ordinary walk on a grey and damp sunday.

Someone was getting slightly bored while I took pictures of every single trace on the ground. He preferred sniffing them.