Dogs claim their territories with their bodily fluids. We humans claim our territories by walls and security gates and locks and guard dogs and “keep out” signs, and all other measures of saying "stay ye away from my materials and property." At the same time, our culture bombards us with messages to fill our homes to the brim with sacrosanct material items. This creates a vicious circle of consumption and protectionism. If we didn't have so many "things" to protect from confiscation and loss, would we be so paranoid about guarding our private property and maintaining our territories?