I would define evil as pleased to cause suffering.
I have tried to define good and evil without taking into account the humanity.
If the humanity would not be, what would mean good and evil?
I have not managed to define good and evil in these conditions.
I think the notion of right and wrong is an exclusive feature of humanity.
There are people who to achieve their purpose, hurt others and do not care about their suffering.
Their aim is not to hurt you,to make you suffer, their goal is different, and to achieve their goal they are able to do anything.
That is bad, is wrong,is immoral , is animalistic.
The worst is when they willingly want to make you suffer.When your pain causes them pleasure, satisfaction.
Animals have no mercy and compassion,but they do not want you to suffer and they do not feel pleasure in your suffering.
Such sentiments only humans can have.
Unfortunately almost all people have in them a greater or smaller part of evil.
Who has not wanted, more or less, to get revenge?What is revenge if not pleased to cause suffering?
Revenge is a characteristic for humanity and not for animals.
So,who is evil,the animals or the humans?