User blog comment:BannedLagiacrus/Monster Appreciation Week: Uragaan (4th Gen)/@comment-27465049-20161021090024/@comment-6050823-20161021211006

Nope. Crystalbeard Uragaan is a darker color due to a special ore being a staple food in its environment. Uragaan usually rest in or on top of brown liquid oil. As a result, their tails and stomachs are usually covered in it. Crystalbeard Uragaan lives in rare areas where this liquid oil has dissolved special minerals inside of it. By resting in this fluid, minerals have crystallized on its chin and tail. Some of these ores and minerals covers the Uragaan's tail and even chin.