How Squirrels remove meat from Black Walnuts, (Juglans nigra)

http://www.durgan.org/URL/?LBIMJ 6 October 2014 How Squirrels remove meat from Black Walnuts, (Juglans nigra)
The Black Walnut,Juglans nigra, is a native to NA and is most difficult to crack the nut due to its strong internal structure. Even the squirrels have difficulty with this nut in removing the meat. Here are some pictures of the method used by the squirrels. This nut is not sold commercially and there are several other types called the black walnut, which are much easier to crack. If the nut is basically impossible to remove the meat it will be a Juglans nigra.