Docking is related to

-Docking is the intentional removal of part of an animal's tail or, sometimes ears.
-The term cropping is more commonly used in reference to the cropping of ears, while docking more commonly but not exclusively refers to the tail.
-The term tailing is also commonly used.
-The term arises because the living flesh of the tail, from which the animal's tail hairs grow, commonly is known as the dock.
-Docking is done in sheep, cattle, horse and pig.