Youtube displayed a video from “National Geographic" for a herd of wild buffalo in South Africa revenging lions which had killed a baby buffalo.
When the lions hunted the baby buffalo, the herd of the buffalo attacked the lions and made them leave the baby buffalo, but it was too late as the baby buffalo was already dead. Through the attack, 3 cubs were ran over and hurt.
The commentator of the video says: "it wasn't the end of the story, the herd of the buffalo decided to get revenge to their baby buffalo, so while the lions were relaxing and playing around, the herd of the buffalo were watching 10 cubs that were playing nearby unaware of the danger around them. But suddenly the lioness knew what was happening, so it tried to come nearer to protect the cubs but the herd of the buffalo was able to hurt the lioness and the cubs.
In this incident we see the kings of the jungle learning a lesson that even buffalos can threaten the lions if they were in a group.