Boneknappers are a species of dragon thought to be mythical by Vikings due to its rare nature. These dragons do have a docile side to its nature as well, as with most dragons around Berk. Boneknappers are built in a similar birdlike manner like the Deadly Nadder, but much larger. Their natural coloration seems to be a dull olive-green, though it can hard to see under their armor of bones. Unlike most dragons, which have hard scales to protect themselves from enemies, Boneknapper scales are thin and soft. To counter this weakness, Boneknappers cover themselves in the bones and horns of dead dragons and other animals, spending much of their time searching for the perfect bones to complete its armor. The Boneknapper will often go to extreme lengths to find the bones it seeks, hunting down the fragments for years.
As beautiful and serene as an exotic flower upon first blush, the four-headed Snaptrapper is actually one of the most insidious and deadly dragons ever discovered. Snaptrappers release a sweetly intoxicating scent, stimulating hunger in nearby dragons and humans alike. When the unlucky victim goes foraging through the deceitful dragon’s leaf-like wings and fins, the Snaptrapper unfurls and strikes.
It is almost impossible to sneak up on a Zippleback because all four eyes are connect to both brains, so each head sees what the other sees, and Vis Versa. In battles, Zipplebacks have the secret power to bite their own tails and set themselves on fire, taking on the form of a flaming wheel that knocks down their opponents.
Fire Type- Ammonium Nitrate mixed with Anhydrous Hydrazine
Their camouflaging skills allowing them to become invisible blending in with rocks, trees, foliage and even buildings. Changewings also change colors based on their moods and surroundings. They shoot hot, corrosive acid that burns through wood and rocks. They are extremely agile and fast. The female Changewing does most of the hunting and defense
Smokebreaths will attack any Viking or dragon that intrude on their territory. These dragons exhale plumes of thick, black smoke. Being communal creatures, these individual smoke clouds often combine into what appears to be a large fogbank. Many Viking ships has been wreaked due to these dragon-made fogbanks, which suits the Smokebreaths just fine, as they scavenge the wreckage for bits of metal to use in building their nests.
Emitting a banshee wail and glowing like a phantom, the Flightmare has haunted Berk for generations. The Flightmare’s glow comes from its primary food supply, a unique type of algae that flows through the woods around Berk. This algae glows with bioluminescence in the light of Aurvandil’s Fire, a Northern Lights display that occurs every few years over Berk. When the Flightmare eats the algae, it also glows, giving it an unnatural appearance. Flightmares are very territorial and short-tempered dragon, and incredibly protective of its algae food supply.
The Death Song has a lethal quality that is reminiscent of the Black Widow. Living on a lush island beyond the archipelago, this dragon vocalizes its beautiful and hypnotic siren call in order to lure other dragons, which it then targets as prey. The Death Song shoots out a liquid substance which traps and preserves victims as it hardens into a stiff amber cocoon that is penetrable only by flame. Typically, the Death Song chooses to entrap dragons only, but it also preys upon.