A Border Collie negotiating weave poles.
Flickr user <a rel="nofollow" class="external text" href="https://www.flickr.com/people/hawksanddoves/">Paul Englefield</a> (recursion_see_recurs ion).
CC BY 2.0
Flickr <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/hawksanddoves/244517659/">here</a>