The terrors of the lawn look as though they are swimming as they tunnel, but they put a lot of force behind their shovel-like paws. Read the story here: http://nyti.ms/1crBzTt Subscribe on YouTube: http://bit.ly/U8Ys7n Watch more videos at: http://nytimes.com/video --------------------------------------------------------------- Want more from The New York Times? Twitter: https://twitter.com/nytvideo Facebook: https://www.facebook.com/nytimes Google+: https://plus.google.com/+nytimes/ W