Not at all, greed is not natural at all, nature is BALANCED, you don't see anywhere in nature some animal using others to get more food or something for itself.
Yes you do see that in nature, because nature is not balanced the way you think it is. Nature is a harsh and brutal competition. Smarter animals use other animals.
Actually you're wrong. Animals attack other animals, eat them etc, only when they need to eat, they don't kill for fun, they don't consume more than they need.
