That is not a shadow. It is a belly high muck line.
This picture was particularly hard to take. The other three dogs were also very interested in her booty.
Does this picture of Koyuk remind you of someone? Cedar was a couple weeks older when this was taken.
The bandaids held nickles used in a failed attempt to keep Cedar's ears from going up. (I thought she was just too darn cute with down ears). We went through a few dollars worth and still find nickles in the grass. Thus far Koyuk looks like she is going to have down ears without any intervention.
The temperature was 98 degrees today. To wash the muck off Koyuk and cool the rest of the pack, we went for another of many swims.