Personally, I wouldn't say Ursas are so much frightening as they are awe-inspiring. Massive beasts made of stars. I'm sure observing them in their natural habitat must be a unique experience. Like star-gazing and nature-watching all rolled into one.

Buy this track: http://jexpsytrance.bandcamp.com/track/astral-roar
Or get the album: http://jexpsytrance.bandcamp.com/album/unnatural

Cover art is Ursa Major, bye MoreVespenegas: http://morevespenegas.deviantart.com/art/Ursa-Major-322174160

Special thanks to mlptf2mods again for the show samples.