Buffalo bulls horns form on their head a kind of massive helmet. They play a vital defensive role and are used for male fights during the mating season. After ten minutes of intimidation, during which the two bulls face each other, turn around, hit the ground, swing their head violently, scratch the earth with their horns and throw it in the air, buffalos rush towards each other. Their foreheads collide with a crash, head down and the tourniquet muscles stretched to the maximum to cushion the shock whose impact would be equivalent to a shock at 14.2 miles/h (23km/h). After several charges, the weaker ends up falling on the side, the winner tries immediately to gore it.