We’re sure you’ve heard of the mannequin challenge which has been the latest must-do thing on social media. It seems that border collies love are pretty awesome at doing these challenges as we’ve posted one attempt earlier. However, we have to admit that this attempt by the border collie duo, Dewey and Blaze, might just be the best mannequin challenge attempt we’ve seen. Have a look and let us know in the comments what you think! Is this the best mannequin challenge by a pair of border collies?