Paw prints in the snow

Why are they so evocative?  Click the pictures for full size images.  It snowed in Nottingham today, for about 15 minutes, really heavy wet snow which lay and then started to vanish almost as quickly as it had arrived.

Both cats are old hands with the whole snow thing so no sudden flurry of excitement from them, although Fizz did try and eat a few snowflakes as they fell on her.