There are acouple ofbig things they don't understand. Besides life in general................

*Life feeds on life. Regardless if that life belonged to an animal or plant, a living being must kill in order to survive.
*The houses they live in, the cars they drive, the roads they drive on,the factories that produce their computers and other day to day thingsthey use etc... etc... all destroyed theplaces that countless animals use to call "home".