Are pecan shells poison to dogs?

Pecan shell is a pure natural material made of cellulose and lignin. In fact it is the identical composition of a common material found in Pears. If you have eaten a pear and noticed the gritty texture, those are clusters of the same type of cells as pecan shell. What is good about the pecan shell resource, is that the shell is protected during the life cycle from any contamination by both an external green husk and the fiber system of the tree which acts as a large filter for any possible ground contaminants. The result is a pesticide free clean fiber resource that is natural and requires no chemical processing or additives.

In pet food, pecan shell is ground to individual cells called sclereids that have a rounded oval shape (sclereids are also found in Apples, cloves, cinnamon, and pears).

Pecan shell is not a poison for animals or humans; instead, it is a rich source of antioxidants such as Ellagic acid and Gallic acid. In fact the shell contains more than 3 times the antioxidant value of an equivalent weight of either raw blueberries or raw raspberries.