"The mammals that roam the plains of Africa apparently hold a surprising secret, namely the existence of a social structure based on elements of violence."

"From this fight, there is a potential for death on one side. The more mature a male becomes, the skills in their fighting can develop further and become more aggressive, thus increasing the risk of serious injury or even death."

"On the other hand, if a female is approaching the time of giving birth, she will be left to give birth without disturbance. However, after the zebra baby is born, the male zebra that has won the fight may take action to kill the baby."