Editing On Aggression (section)

===Programming===
{{see|Instinct}}

According to Lorenz, animals, particularly males, are biologically programmed to fight over resources. This behavior must be considered part of [[natural selection]], as aggression leading to death or serious injury may eventually lead to extinction unless it has such a role.

However, Lorenz does ''not'' state that aggressive behaviors are in any way more powerful, prevalent, or intense than more peaceful behaviors such as [[mating]] rituals. Rather, he negates the categorization of aggression as "contrary" to "positive" instincts like [[love]], depicting it as a founding basis of other instincts and its role in [[animal communication]].

{{anchor|Hydraulic model}}