Watch A Man Casually Brushes the Teeth of the Deadliest Large Land Mammal on Earth

BBC has preiously reported that hippopotamus (hippos) is named as the deadliest large land mammal on earth as it kills around 500 people annually in Africa. This sharp-teeth animal is naturally aggressive.

BBC noted that at up to 2,750kg hippos can crush a human to death. In the video below as posted on Twitter, however, you can see a man casually brushing the teeth of a hippo. Not even a hint of fear can be seen.