Callie with frosty paws.
If it's just barely freezing, the puddles have no ice and the frost melts on Callie's feet. She picks up sand and mud just like on a muddy paws day. Then, upon our return from the walk, it's into the shower for a rinse-down (Callie has her own shower in the utility room). When it's really cold, there's no melting, no sand or mud, and no need for a shower. I like those days.
Much more rare is the snowy paws day. When there's snow, her feet get covered with little snowballs. Snowy paws days require a warm rinse to melt the snowballs before Callie can go into the house. We haven't had a snowy paws day in a couple of years.