Nobody's hands are free from the blood of other animals, not even vegetarians, he concluded. Millions of animals are killed every year, Davis says, to prepare land for growing crops, "like corn, soybean, wheat and barley, the staples of a vegan diet."
Smaller Victims
The animals in this case are mice and moles and rabbits and other creatures that are run over by tractors, or lose their habitat to make way for farming, so they are not as "visible" as cattle, he says.
And that, Davis says, gives rise to a fundamental question: "What is it that makes it OK to kill animals of the field so that we can eat [vegetables or fruits] but not pigs or chickens or cows?"
Any disruption of the land, whether it be to farm or to build subdivisions, reduces the amount of land left for other animals, resulting in the deaths of many. And Davis, a professor of animal science at Oregon State who grew up on a farm, says as a child he saw animals killed by the routine operation of farm machinery, so there's no way to have a bloodless farm.