Donald Watson, who was a co-founder of the Vegan movement in England in the 1940s, believed that "farming" animals was inherently unjust. Upon visiting his uncle's farm, he observed, "The idyllic scene was nothing more than death row, where every creature's days were numbered by the point at which it was no longer of service to human beings." He also said, "We can see quite plainly that our present civilisation is built on the exploitation of animals, just as past civilisations were built on the exploitation of slaves..."

The Predatory Behavior and
Ecology of Wild Chimpanzees:

ecologos.org/cbs.htm

Biological Adaptations

www.iol.ie/~creature/BiologicalAdaptations.htm