A little drop

I took the dog for a walk in the park again today. We did the red trail, which is about six miles long. I let him run without the leash (mainly because he chewed the thing into two pieces). Sometimes I wonder what goes through his head. He sniffs everything, and then urinates on every prominent tree he passes. He pees only a few drops at a time, spreading his urine over the maximum number of trees possible.

We passed by a waterfall. I got close and got this picture of a single drop of water falling.