A blue merle Australian Shepherd in an agility competition.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71419271@N00">Ron Armstrong</a> from Helena, MT, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/71419271@N00/475268115/">HMKC Spring 2007 Agility Trial</a>