Interesting topic and interesting views!
Well, I think art is the heart of everything we are experiencing or coming in touch with. Does that make sense?:) In short, we can use this word i.e. "art" before any activity or happening in our day-to-day life whether it is naturally occurring or artificially occurring events.
For example, the art of living, the art of learning, the art of earning, the art of speaking, the art of making, the art of solving a problem and so on. So, everything has a pattern that looks good or makes more sense when we come across that like you said the snowflakes or footprint of animals.