Ssurians, also known as great dragons, functioned as significant reptilian hunters on the world of Dathomir. Due to their incredibly dense hides and razor-sharp teeth, the majority of creatures preferred to evade them instead of engaging in combat. The Scream of the Ssurian, a potent Nightsister spell, enabled the spellcaster to emulate the great dragon's predatory vocalization and area defense signal.
Ssurians, being reptiles, were cold-blooded vertebrates, as are all reptiles.