It does look a bit shopped. The three on the right in front of the snowcloud have a "crispness" around them, similar to the two in front of the truck. However they all seem to have a "splash" in the snow where their hooves hit.
Maybe something was removed instead of added.
Here's what I had thought of when I saw today's topic..
http://weblog.greenpeace.org/forestr...deer_race.html