It has sometimes been suggested that violence is endemic to all primates and a consequence of social relations. recent studies of other nonhuman primates have revealed that

That this trait of violence and aggressive behavior is not limited to human primates but also to nonhumans as well. Aggression and violence have been adaptable characteristics akin to organisms for survival.
Thank you for your question. Please don't hesitate to ask in your queries. 

Is this form a story we need more information