Aggression can have adaptive benefits or negative effects.
Aggressive behavior is an individual or collective social interaction that is a hostile behavior with the intention of inflicting damage or harm.
Aggression between groups of animals may also confer advantage; for example, hostile behavior may force a population of animals into a new territory, where the need to adapt to a new environment may lead to an increase in genetic flexibility.
It may occur either in retaliation or without provocation.Classification may also encompass aggression-related emotions (e.g. The operative definition of aggression may be affected by moral or political views.Examples are the axiomatic moral view called the non-aggression principle and the political rules governing the behavior of one country toward another.The Latin was itself a joining of ad- and gradi-, which meant step at.The first known use dates back to 1611, in the sense of an unprovoked attack.Two broad categories of aggression are commonly distinguished.