A male majungatholus is searchig for his pair, but theres only one problem, his brother is doing the same.
PALEONTHOLOGIST: One needs to kill the other to take position of the female. If one kill the other, he could make his reproduction dance to the female with free.
The biggest brother attacks the other and knock out him. Now his attention focus on reproduction. But then the other brother bite the neck and ends with the fight, and he also has the oportiunity to reproduct with the female.