The funny thing about these is when you scare something it literally poops ! So if your like me and you like to defend your base with lots of plant species - x or you like to grow lot of crops for recipes and tameing. This is an amazing fertilizer collecter . Also it's scare roar will give any creature I big damage reduction . I was taking a freshly tamed one home and I got jumped on by 3 raptors and I barely took and damage and the raptors ran away when my yutyranus roared
The fear roar is amazing for taming because the damage increase reduces the amount of tranqs you would need to use to knockout something. make sure to have already caged the creature though because if you don't they will run away.
This thing is an absolute beast. I tamed a level 120 and pumped nothing but stamina so it could yell at my dinos to do better when fighting the broodmother. They were so inspired, that they got a 25% damage bonus, and a 25% damage resistance bonus meaning we completely shredded the broodmother when it may have been a close fight. One or two of these behind your army and you, my friend, have comrade stalin himself telling your troops to fight to their last breath