Final answer:
Gorillas and chimpanzees are examples of primates that display aggressive behavior, with gorillas often using aggression displays to prevent injury, while chimpanzees can engage in physical attacks. Frans de Waal's research draws parallels between human morality and primate social behavior. Aggression among primates is a critical part of their social interaction and communal life structure.
Step-by-step explanation:
Primates that practice aggressive or wrathful behavior can vary, but prominent examples include male gorillas and some chimpanzee groups. Gorillas, for instance, are more likely to put on a display of aggression such as beating their chests or pounding the ground to show dominance rather than attacking directly, which helps prevent injury. In contrast, chimpanzees have been observed to occasionally engage in actual physical attacks, including lethal aggression towards members of their own species.
In the world of primatology, researcher Frans de Waal has suggested that the roots of human morality can be traced back to social animals like primates, due to their complex social behaviors and the need for empathy and reciprocity to maintain group cohesion. This complexity of behavior is seen in other primates as well, such as the peaceful and egalitarian bonobos as opposed to the more aggressive and hierarchical chimpanzees.
Aggression in primates can lead to serious consequences, including injury and death, which underscores the balance that these species must maintain between dominance displays and actual combat. These behaviors are an important aspect of the social structure within primate groups and contribute to the understanding of primate sociology and evolution.