What you see here is two male chimpanzees who are the same size, but one is walking upright, has his hair up, has a big rock in his hand, and he's the alpha male.
ترون هنا ذكرين من الشمبانزي لهما نفس الحجم، لكن أحدهما يمشي باعتدال وشعره منتصب، ويحمل بيده حجراً كبيراً وهو الذكر الفا.