"...Razor sharp teeth coated in a corrosive bile that dissolved flesh in seconds, thick scales like plate mail, claws as big as long swords, and a studded tail capable of pulverizing stone. It reared up on its hind legs, towering over him, and unleashed the roar for which it got its name. He managed steady his horse and cover his own ears in time, but his two companions were not so lucky. From that distance their ear drums were nearly ruptured and they collapsed to the ground, their centers of gravity completely lost, and his own ears rang and burned. The thunder lizard slunk back to all fours, the bulbous gland concealed by its plated head deflating as it poised to strike."

Endemic to marshlands and bogs but equally at home on the plains and deserts, thunder lizards are territorial and easily aggravated. While typical specimens measure around 30 to 40 feet in length, older individuals are reported to reach as long as 60 to 70. If one is spotted, the recommended course of action is to turn around and leave immediately, for if one catches scent of you it will have no trouble outrunning a horse at full gallop. In the worst case scenario, and one finds themselves face-to-face with one of these beasts, then one should try to strike the soft, fleshy gland around its neck, the source of its acidic bite and deafening, cannon-like roar.