Question

An important feature of social aggression that distinguishes it from other forms of aggression in many mammalian species is that it is

Answer 1

I believe the answer is: dependent on testosterone

Testosterone played a role in increasing a mammals' tendency to display dominance toward another mammals.
Increasing testosterone often caused higher tendency to displayed aggressive behaviors, which is why the number of males of arrested for aggressive violence in human society far outnumbered the females.