Nature

Breakfast time: The cat flap creaked and Columbus squeezed in (like toothpaste), bringing with him his first gift of the year. I didn't want to appear ungrateful, but scooped up the traumatised little mite and took him back outside. For ten minutes he stayed where I left him, rooted to the spot, eyes firmly closed and shivering pathetically. And then he disappeared. Nature.

But what nature or instinct is it that wants to kill or maim innocent people?