Morality cannot be applied to animals or nature. Animals have instincts and nature is indifferent, neither are "evil" in the way humans use the word.
To most humans the concept of morality is relative and complex depending on a hell of a lot of things like education religiousity and upbringing etc etc. Individual morality is plastic, when our circumstances change we see a different view or we have a new experience we can alter our judgement of what is and isn't moral.
There is different Laws from different places based on general principles of what most in that area would consider right and wrong.