Throughout cultures and time, shouting and yelling have typically been categorized as masculine acts. It makes sense. Yelling is inherently aggressive and often the prelude to actual physical violence.
Across mammal species, males will frequently engage in posturing that includes roaring, snorting, or screeching. The aim of this pre-fight auditory showdown is actually to avoid having the conflict escalate into a physical altercation. If a male mammal can dominate his opponent into submission with just a roar, he eliminates the risk of getting killed or seriously injured and saves himself precious energy. If the roar doesn’t work to stave off the fight, well, hopefully it was fierce enough to instill some fear into one’s foe, leading him to struggle less fiercely and submit sooner, rather than later.