Lifestock must bear the Mark of Authentication in order to pass through borders. Cattle and sheep must be branded, marked, or submit to a biometric database before they are allowed to pass across a border.
Members of the wildlife community are free to help each other, and to form mutually beneficial relationships.
Members of the livestock community are only free to help each other but only if they also offer a portion of that help to their master. In order to facilitate the aforementioned "only if", all manner of help shall be quantized through an organizational mechanism known as "commerce".
Baa, Baa, Shee-eople (Sing to your children, to the tune of Baa, Baa, Black Sheep) Baa baa shee-eople, Have you any cash? Yes sir, yes sir, three bag stash. One for my country, One for my state; And one for the little boy With a high tax rate. --S. Mann, 2004