This is a dragon summary and breed will be updated recently
No dragon is more ferocious, or feared than the MONSTROUS NIGHTMARE. This gigantic dragon has a long, snakelike neck and tail, and is covered with red scales and long sharp spines. The Nightmare's gigantic head and mouth can swallow Vikings whole. This dragon can attack any time of the day or night, from the air or on the ground. It is highly aggressive, and will never run from a fight. Its fire is thick and sticky, clinging to walls and running down hills like a flaming river. The Nightmare also has a nasty habit of setting itself on fire.
Of all the dragons that inhabit our world, one of the most unusual and dangerous is the HIDEOUS ZIPPLEBACK. The Zippeback is one of the largest dragons you may ever encounter. It is unmistakable, with its twin heads. The heads are distinct, with separate thoughts and different personalities. Like most dragons, Zipplebacks can fly, but their wings are small and they spend most of their time on the ground. Zippelbacks are solitary, preferring to hunt alone. They come out after sundown, prowling dark forests for victims. The attack of a Zippelback is like no other. Instead of breathing fire, a Zippel makes explosions. One head BREATHES gas, and the other head.... LIGHTS it
One of the toughest Dragons in our world is the GRONCKLE. Gronckles have gigantic heads, short bodies, and round tails. Gronckles are lazy, and spend most of their time sleeping in communal heaps. They have even been known to fall asleep while flying, waking only when they crash into the ocean or the side of a mountain. Gronckles have relatively small wings that beat as fast as a hummingbird's. They are slow in the air, but make up for this with their maneuverability. A Gronckle can fly backwards, sideways, and even hover. Gronckles attack from the air, where their primary weapon is most effective. Gronckles chew rocks, melting them in their bellies and firing them as balls of molten lava.
One of the most beautiful dragons in the world is the DEADLY NADDER. It is easily recognized by the bright blue body and brilliant yellow spikes that cover it from head to tail. This colorful dragon is active any time of the day or night. Nadders are quick and agile in the air and can fly for long distances, but will almost always land before attacking. Nadders travel and raid in groups, making them especially dangerous. The Deadly Nadder isn't the largest or fastest dragon, but it possesses the hottest fire in the dragon world. The blast of a Nadder can melt steel, or turn a man to ash in seconds. But the dangers of the Nadder don't stop there. The tail of the Nadder can be whipped around, releasing a volley of giant spikes that can penetrate trees, walls, and Vikings.
Smallest of the dragons is the TERRIBLE TERROR. This tiny menace is unmistakable, with a small snakelike body and tiny wings. Terrors can be found roosting in the rafters of Viking barns and under the floorboards of Viking houses. Though a single terror is too small to carry away a sheep or inflict much damage to a Viking, they are usually found in flocks. The largest on record was a mob of Terrors over two hundred strong. In those numbers even the strongest Viking can be overwhelmed, and the biggest sheep can be stolen.
he rarest and most intelligent of the dragon species, the Night Fury is distinguished by its dark color and piercing yellow eyes, as well as its smaller size, heavy chest and short neck. Possessing the largest wing-to-body ratio of all dragons, it can fly higher, faster and longer than any dragon, and its incredible power-to-weight ratio renders it capable of vertical takeoff. Its unconventional fire (a semi-solid mass alight with an acetylene/oxygen flame) explodes its target on impact. Its signature attack mode is executed after sundown and from high altitude—enwrapped in its wings, it dives like a bullet, pulling up at the last moment to deliver one precise and explosive burst…then vanishing back into the darkness. The only warning is the ballistic noise the diving Night Fury makes. Its kamikaze attack, along with its cautious behavior and analytical mind, makes the Night Fury a devastating opponent with an extraordinary success rate. To date, no Night Fury has ever been brought down.
The Snaptrapper first appeared in the film within the pages of theDragon Manual when Hiccup was trying to find information onNight Furies. He didn't mention its name, but the book said it was extremely dangerous. In Book of Dragons, it is in the Fear class, and attracts prey with a sweet smell of chocolate from its mouth, and can fire acid as well. Like all dragons, its sheds its scales and talons, but they regrow. Snaptrappers love rain and will often splash in the mud.
The Changewing differs from other dragons through its use of spitting acid instead of fire to burn its victims. Even newly-hatched Changewings have the ability to spit acid onto any potential threat. They got their name from the changing colors of their scales which they use as camouflage, just like chameleons.