Cousins to the great dragons, wyverns have two scaly legs, leathery wings, and a sinewy tail topped with a poison stinger that can kill a creature in seconds.

Their strong hides leave them well protected against blows and cuts though the stiff scales can be pierced with enough force in the right area. Their hide and draconic ancestry also allows them to shrug off heat and cold with only mild discomfort and superficial markings. Poisons and acids have never been seen to have an effect, likely due to their own ability to produce their own toxins in great quantity and the use of their stingers in addition to their teeth and claws in combat with each other.

Perhaps the only saving grace is that a wyvern is loathe to venture out in a storm. There are tales of screeches of horrific pain following peals of thunder which may lend cause to the behavior.

Hunters and slayers chasing them for alchemical ingredients or trophies have found the greatest success in drawing them out to be the use of pigs or boars which the beats seem to have a particular taste for, often flying over herds of closely packed sheep or cattle just to nab a single fat sow.

On the subject of alchemical ingredients, much has been written about the potency of their venom and its properties as a tissue devourer: It seems designed to specifically attack the circulatory system, reducing it to slush while leaving muscle and other organs intact.

Interestingly, there is at least one anecdotal case of a man trying to get back to town after suffering a snake bite only to stumble upon a feeding wyvern which struck him with its stinger. Both man and wyvern were surprised when the man suffering from the snake venom suddenly took to his feet with great rapidity and left the confused beast behind, making it to his village without much ill beyond the mildly bleeding stinger wound.