Everyone thinks that the male roar is similar to the yuty roar! It is not, Roar Boosted allies recover 50 Stamina and Torpidity per second, and have their speed increased by 50%. Roaring Shadowmane (and others if they're extremely close) sometimes get a second buff (even if roar fails) that further increases Melee Damage for 5 seconds. All of this found on the wiki