Bison uses Park sign to scratch an itch

[Catherine]

A visitor to Yellowstone National Park was treated to a rare, silly sight. A very large Bison was using the park sign as a back scratcher. It is a good thing the sign is so strong. The Bison was really giving it a workout. 

https://www.yahoo.com/news/articles/mass...00236.html

As usual someone asked if they could get close to the Bison and help out. No! Bison are big and strong and territorial.
They may look like big softies, but those horns mean business. Some people think they are fluffy cows, but don't pet the fluffy cows. 
Watch from a distance and enjoy the sight.