These patterns may in fact be their ancient ceremonial grounds. Vegetarians - nothing wrong with vegetarians. Some of my best friends are vegetarians. Sweetheart, let's make up. Have this deceased squirrel.
Sacred cows make the best hamburger.
This natural selection is good for the herd as a whole because the general speed and health of the whole group keeps improving by the regular culling of the weakest members. In much the same way, the human brain can only operate as fast as the slowest brain cells. Excessive intake of alcohol, we all know, kills brain cells, but naturally it attacks the slowest and weakest brain cells first. In this way, regular consumption of beer eliminates the weaker brain cells making the brain a faster and more efficient machine. So that's why you always feel smarter after a few beers.