An <a href="https://en.wikipedia.org/wiki/Australian_Kelpie" class="extiw" title="en:Australian Kelpie">Australian Kelpie</a> <a href="https://en.wikipedia.org/wiki/sheepdog" class="extiw" title="en:sheepdog">sheepdog</a> backing sheep in order to reach the lead sheep in the flock to drive it along.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/87273935@N00">Peter Shanks</a> from Lithgow, Australia
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/87273935@N00/2301826562/">sheep dog</a>