- "Speed: Unknown. Size: Unknown. The unholy offspring of lightning and death itself. Never engage this Dragon. Your only chance, hide and pray it does not find you."
- ―(How To Train Your Dragon) Hiccup reading the Dragon Manual about the Night Fury.
The Night Fury is a Strike Class dragon that appears in the movie adaptation of How to Train Your Dragon. It is one of the most powerful dragons and is the rarest dragon known. It was described as the "Unholy Offspring of Lightning and Death Itself". Toothless is currently the only known Night Fury in the franchise.
Appearance and Characteristics
The Night Fury is the fastest, smartest, and rarest of the known species of dragons, as Toothless might be the last known member of his species. It is medium-sized with a sleek, dark body with black coloration. It has faint lighter patterns similar to that of a Manta Ray. The Night Fury somewhat resembles an axolotl in general appearance and has two pairs of wings with a shape similar to a bat, two mobile, ear-like appendages on the back of its head that show its mood and help it hear, as well as other pairs around their jaw depending on their age. They also have a pair of large, yellowish-green, cat-like eyes and sharp retractable teeth. Unlike most dragon species, the Night Fury has a short neck and lacks any kind of horns. The dragon is about 26 feet in length, 27 as a fully grown dragon.
In flight, the Night Fury's wingspan is unrivaled, bearing approximately 48 feet, making it resemble some sort of jet plane. This allows it to fly faster, longer and further than any of the other dragon species. It uses the wing-like tail fins on its tail to help steer and maneuver, similar to an airplane rudder. However, a Night Fury will be incapable of flying if one of these fins is missing or destroyed which shows that they are also used for ballast in flight. It is capable of taking flight from a standing start like a pigeon.
According to the Dragon Manual, the Night Fury is considered to be so aggressive that it is likened to the "unholy offspring of lightning and death itself". Night Furies are generally very aggressive to any form of threat they find, similar to how the other dragons treat the Vikings of Berk. But they are also curious creatures that attempt to understand new things they observe and are intelligent enough to attempt to recreate the actions that they see. Night Furies, in comparison to most other dragons, are very capable of communicating, and seemingly understanding human speech: the best evidence of this is when he makes a noise in agreement with Hiccup regarding the fact that the Red Death can fly or when Hiccup orders Toothless not to kill Astrid and Stoick. Toothless also does not have a very hard time getting his emotions noticed: for example, Toothless growled when Hiccup stepped on his drawing, or snarled in disgust and fear when Hiccup mentioned he put an eel in Toothless' dish. Toothless' pupils dilate when he is in a good mood, and narrow to slits when startled or aggressive.
Night Furies mainly resemble cats and bats. Such behavior can be seen when Toothless licks himself, walks in a circle before laying down, and scratches himself just like cats do. Night Furies resemble bats because they hang themselves upside down, are nocturnal, and use some form of echolocation.
The Night Fury has the ability to shoot bursts of purple-colored flames, which are composed of acetylene and oxygen. The blasts explode directly upon impact, sometimes exploding in midair because of the cut of the oxygen supply. The Night Fury can fire at different levels of power, such as a blast weak enough to get deflected by a shield, and a blast powerful enough to destroy an entire catapult tower. The blast was called a plasma blast by Hiccup since the TV Series. These blast can be done with pinpoint accuracy. The Night Fury also has the habit to light and warm up the place where it will sleep, as seen on the movie and the TV show. This fire isn't particularly strong, but it can be incredibly hot, and can light up fireplaces, stoves and lamps. The fire has also been seen in a blue color.The Night Fury's plasma blast can sometimes be reflected off walls, mainly rock. They can use this as a tactic to take out fast moving objects in narrow tight spaces. It was shown in Dragons: Race to the Edge, episode Have Dragon Will Travel Part I, when Toothless fires a reflective blast to take out Heather and Windshear.
Strength and Combat
The Night Fury is also known to be very strong, being able to hold off Vikings like Stoick and other Vikings in the first film. He can also fly with a heavy load of Stoick, who is 350 pounds with an extra weight of Hiccup. Toothless has also shown to push a Whispering Death head on, though he was charging from a low altitude, it still takes a strong force to push a Whispering Death to the ground. Toothless could also carry Hookfang by his tail with extra weight of Hiccup and Snotlout but he shown to have struggle to lift Zippleback like Barf&Belch with his rider as well. As his Toothless strength for his kind is near around 3tons. 
Toothless is also a very strong and persistent fighter. He has easily taken on Gronckle in very easily short battle, also taken on Monstrous Nightmares, and fought Whispering Deaths, as well as being unable to fly, with only the help of Hiccup to shorten the fight, as Toothless could have kept on fighting until one succeeds completely.
Speed and Stealth
The Night Fury is the fastest and most agile known dragon. It is said to reach speeds that break the sound barrier, notably in a dive bomb. The Night Fury's streamlined sleek shaped body and massive powerful wings helps it obtain a speed limit faster than the speed of sound. This species also possess remarkable speed and agility on land, being able to outrun and outmaneuver most other dragons and even being able to jump to and leap from various objects like trees or walls.The Night Fury's jet black color and dark scales makes it nearly impossible to spot in the night sky. The only warning that it gives is the sound of the divebombing and a loaded blast, right before it attacks with a powerful plasma blast. The only way to spot a Night Fury flying at night is when it passes its flame-engulfed blast. Hiccup was able to shoot one down as it flew passed a burned catapult tower that it just shot.
Night Furies have an uncannily great sense of hearing and they are able to hear long distance, as proven by Toothless when he was able to hear his rider yelling from the cove. Night Furies have a great sense of smell from a certain distance until they lose track. It is able to fly at night and find its way, but it is unknown if it has night vision, as Hiccup had questioned this when they were trying to escape from the cave.
Stamina and Endurance
Night Furies, being excellent flyers in speed and agility, also have very high stamina, as Toothless has proven to fly many times without any break between in the TV Series. Night Furies are also shown to be quite tough, like all dragons. They can survive falls from the sky with fairly minor injuries as demonstrated in the first movie and the TV series. Also they can use their wings to repel weapons as also shown in the TV series.
The Night Fury is extremely intelligent, its intelligence being among highest of all the dragon. Toothless can almost completely understand everything said to him. Night Furies also seem to be able to command other dragons to an extent, such as when he told the other dragons to back off when he was facing the Whispering Death. In We Are Family Part II, Toothless was captured and imprisoned in Outcast Island and he was able to outsmart two Outcast soldiers by himself by pretending to be unconscious and tricking them into freeing his mouth muzzle. Night Furies also seem to be one of the few dragons who attempts to show creativity. Toothless is also able to mimic on what Hiccup does and can give expressions to respond to him.
In DreamWorks Dragons: Riders Of Berk episode We Are Family Part I, Toothless demonstrates the ability to use echolocation. When Night Furies are at locations where their visual sight is limited, making it dangerous to fly, they can use a special roar. This roar, visualized as a purple colored sound wave from the dragon's perspective, bounces off all objects and obstacles nearby and allows the dragon to avoid them, even in mid-flight. Unlike bats, this roar, or at least part of it, is still low enough to be within human hearing range; humans are able to hear the dragon using the roar. Night Furies can also use this method when they are trying to find an object in open areas where visibility is low, such as when Toothless was trying to locate the Snow Wraith in a snowstorm in episode Dragon Eye of the Beholder Part II. This sound wave is in a sonic ringed shape, rather than a lined sound wave.
Night Furies are shown to be amazing swimmers as demonstrated by Toothless. He can swim in high speed and hold his breath for a while, but Night Furies do have a limit and will drown unless they have access to air. As evidenced in the first movie and several episodes.
As shown by Toothless, for his kind are able to record the words of humans as Toothless was able to mimic Hiccup. Possible over the years they have some cognitive understanding of the language.
In the second movie, Valka showed Hiccup hidden spines on Toothless' back, that even the dragon himself didn't know about, most likely because he lacked other Night Furies to show that feature to him. After that he is able to extend them at will. Those "flaps" are flat, leathery fins, placed in 'V' shape and extending from his back, to the end of tail. They gave him more maneuverability and control in flight. As Valka was able to do this with the first Night Fury she'd ever met, there is probably a similar or equivalent ability in another dragon species.
Also demonstrated in the second film, Night Furies are shown to be able to "charge" themselves, which gives them more strength, stronger fire with seemingly no limit, and the ability to not only withstand Alpha's control, but also to break that control over other dragons, which makes a lot of sense, as Toothless was the only dragon able to oppose the Red Death's control even inside its nest. This also give them a more menacing look with their back, nose and mouth glowing bluish color similar to their fire, probably due to the amount and strength of this fire inside them. Toothless, in this form, was able to challenge Drago's Alpha, and not only hold his own, but also free other dragons from control, and order them to attack the evil Bewilderbeast. After that, the Alpha gives up, and the other dragons accept Toothless as their new alpha. This means that the Night Fury is one of the very few dragons, along with the Bewilderbeast, that can forcefully become an alpha, making the Night Fury an "Alpha Species".
A Night Fury's main type of attack style is dive-bombing at it's enemies at a great speed while being completely camouflaged and blended in within the dark night sky. In addition of dive-bombing, the Night Fury will also spit out oxygen/acetylene-fueled charges that will explode and destroy its targets. They occasionally hang and sleep upside down like a bat. Sometimes when they are getting ready to sleep, they singe the ground with their fiery breath, while walking in a circle, much like dogs and cats do before laying down.
Night Furies are picky eaters and prefer to eat fish. When hunting, a Night Fury uses it's sharp retractable teeth as fishing hooks in order to snatch and grip their prey from the water. Night Furies are also capable of completely swallowing their prey whole, and their stomach liquids, which are similar to battery acid, are strong enough to dissolve fish bones similar to crocodilians. When tamed, Night Furies are known to regurgitate half of their catch for their owners. As seen with Toothless, Night Furies have a penetrating, wolf-like or cat-like stare. While Night Furies usually keep to themselves, they are very protective. They are also very playful like most dragon species. The Night Fury is a very elusive and a very dangerous dragon and should be avoided at all costs, unless of course, one is able and willing to train it.
Night Furies are said to be amazing fighters. They use their incredible explosive firepower to damage any unlucky foe. It is shown that a Night Fury can switch between different fire styles. In the TV series Hiccup tells Toothless to use "plasma blasts".
Plasma blasts are violet plasma-bolts that explode on target almost instantly. They will turn purple when cooled down as it travels. These blasts can explode easily in air at high altitudes as the fire is taken out of the blast. These are a Night Fury's primary defense and are very lethal.
Night Furies are very agile and swift in flight, using this to confuse their enemies. Toothless, a Night Fury, is able to fight off Hookfang, a larger Monstrous Nightmare to protect Hiccup, and he is shown to be strong enough to wrestle against a much larger Whispering Death. While in some cases Hiccup says that he has a limit of six shots, this is actually not concrete, as we can see him shoot many more of them from time to time. It is possible that this limit applies only to the battle typed fire blasts, and the weaker ones have different, if any limit.
TrainingTraining a Night Fury is very hard. Hiccup trained Toothless without too much difficulty because Toothless couldn't fly and was stuck in a cove. A wild Night Fury will just fly away and ignore you unless you catch its interest (a good way to do that is with fish). The only other way is to catch it (which is extremely hard). It is preferable to catch it without hurting it (which is even harder than catching it). Another way is to find its egg and train it when it hatches. This is even harder since Night Furies are the rarest of all the dragon species. In fact the entire species seems to be scraping the edge of extinction with Toothless being one of the very few members, of this great species.
"The most feared and terrifying Dragon in the world is the Night Fury. Only few is documented about this Dragon, speed: unknown, size: unknown, your only chance hide and pray it does not find you."
"He's the Ferrari of dragons. Very, very fast. A lot of Dragons have giant scales and are spiny. He has the clean, sleek look of a panther." 
"These stealthy, high flyers are so fast they're almost never seen, but just because they aren't visible doesn't mean they can't flame a Viking village!"
- The growls and croons of Night Furies and Toothless are a combination of various sounds, including Supervising Sound Designer Randy Thom, elephants, horses, tigers, and even domestic cats.
- Toothless, a Night Fury, is the only dragon in the first film to be given a personal name.
- Toothless may be the last Night Fury, as Hiccup said he has never seen another. Valka also mentioned that he may be the last of his kind. Although a comment she made about never having seen one so close implies she might have seen another from a distance before she was reunited with her son. However, she may have simply seen Toothless himself from a distance. (This line is only used in a featured clip, but is removed in the film, as it conflicts with her knowledge of Toothless' split spine ability).
- It can tone down its fire for different applications, for example, it can fire concussive blasts that can knock people off their feet (though not significantly harm them), while at the same time being able to destroy entire battlements with more powerful blasts.
- When a Night Fury is about to fire on an unsuspecting target(s), you can hear it charge and ready itself for the attack. Villagers take that opportunity to prepare themselves for the worst. Because of that opportunity, Hiccup was able to figure out if Toothless was about to attack, locate him, and take him down.
- In the Riders of Berk episode We Are Family Part I, Night Furies are shown to have the ability of echolocation.
- According to the School of Dragons website, Night Furies shoot lightning. This could explain why their shots are called plasma blasts as fire and lightning are both examples of plasma, a state of matter, which is the form of high-energy ionized gas.
- The game says Night Furies don't like fish, despite them liking fish in other media.
- They are the fastest fliers of the dragon world, but according to the Dragonpedia, Typhoomerangs are just as fast.
- The Night Fury is the crest of the Berk Dragon Training Academy.
- According to 'How To Create Your Dragon', the Night Fury is a mix between a horse, wombat, kangaroo, bat, snake, dog, cat, panther and a bird of prey.
- There is a lot of uncertainty about their shot limit, even if some sources and even Hiccup himself in one episode states that his limit is 6, that fact might not be entirely true as even in original movie, in final fight, he was able to give more than 10 shots, with 7 full powered ones in quite quick succession, this may be because the Night Fury is able to reload its shots quickly.
- Due to the fact that Night Furies eat fish it can be deduced that Night Furies live near large bodies of water.
- Although Night Furies seem to be on the brink of extinction (due to fact that Toothless is the only known one), the exact cause of this endangerment to the species is unknown.
- Night Furies don't have sharp spikes or spines, instead they have short and thin fin-like spines. The reason for this is because the short fin-shaped spines prevents greater air resistance than tall sharp spines. This gives the Night Fury a huge advantage in terms of speed.
- The Night Fury is the only Strike Class dragon that doesn't relate to bad weather. The Skrill relates to lightning storms, the Woolly Howl and the Snow Wraith relates to hail storms or blizzards.
- The Night Fury is the only Strike Class dragon in the How To Train Your Dragon series that is not a wyvern. The Skrill and the Snow Wraith are wyverns as they walk with two legs, and the Woolly Howl is an in-game dragon and has never made an appearance in the TV series and movies.
- ↑ Book of Dragons (How to Train Your Dragon TV)
- ↑ Race to the Edge – "Night of the Hunters, Part I"
- ↑ 'How to Train Your Dragon' breathes fire into the film genre - USA Today
- ↑ Back of Walmart-Exclusive large Night Fury toy's box