This Nut can be found in middle America to eastern America scattered through the states their. The nut grows on a tall tree and is covered by a green layer that covers that hard brown shell. The nut can be found in that brown shell
For Your Pet
Black walnuts are high in fat and can cause GI tract issues for you pet. Rabbits should also not eat any part of the walnut tree including wood, leaves, and shell of the walnut as they are not able to digest it well.
Black Walnut is poisonous to your pet. Never feed black walnut to your rabbit and other small pets.
If you believe that your pet has been poisoned immediately call your vet or one of the animal poison control hotlines on this list.