Wyrms are small draconic creatures, just about the size of a dwarf, that roams the skies in warm and temperate climates. Able to fly, they can find shortcuts that most predators wouldn't take. They have a fire breath, fire immunity, and in clusters can be deadly to unprepared dwarves. Fortunately, they can be caged, tamed, and ultimately trained, making them precious assets. Given enough time, they will replace war dogs. Their hides makes for effective protection.