Photo of man cradling aging dog in Lake Superior strikes chord online

A photo of a Bayfield, Wisc., man swimming with his aging dog in Lake Superior has found a huge following online. The photo shows John Unger cradling his 19-year-old shepherd mix, Schoep -- who suffers from arthritis and finds comfort in the water. Photographer Hannah Stonehouse posted the photo on Facebook, and it reportedly has been viewed more than 1.8 million times.