This editorial is based on two comprehensive reviews about the effects of nutrients on impulsive behavioral aggression in comparative primatology [1,2]. The aim of this work is to highlight the importance of feeding ecology in primates either in experimental or in field studies in relation to its modulatory effects on aggression and its impact to sociality and social styles. Aggressive behavior can be generated, stimulated, and modulated through both intrinsic and extrinsic factors, e.g. social and nutritional influences, endocrine, and neurophysiological regulatory mechanisms. Most of these factors are interrelated and seemed to play important roles during evolutionary adaptative processes.