It wouldn't be easy–the most common descriptor of a dragon is “fire-breathing,” after all. But unlike other aspects of the book and now the film that are wholly magic, Smaug's burning breath is actually one of the least magical, and can be wrangled into plausibility.
Despite there being no known examples of organisms capable of breathing fire the concept of dragons as flame-spewing mythical creatures is well known across the world. It would be reasonable to expect that like most legendary beasts, the myth of the dragon was inspired by the natural world.
Unfortunately, no documented animal has the ability to breathe fire, but there is one group of animals that is widely accepted as those that come closest to doing so: bombardier beetles.
Assuming Erebor is mainly composed of Volcanic igneous rock, I'm guessing that Smaug's fire is cooler than 1200 degC, since he didn't melt the tunnel the Dwarves were hiding in. Most minerals that comprise igneous rock begin to become molten before temperatures reach ~1200 degC.
Strong gas pressures in the dragon force it to expel hydrogen regularly, which due to its high flammability allows it to breathe fire.
Did you know that dragons really do exist? These dragons, however, cannot fly, and don't breathe fire. These dragons are called komodo dragons. Komodo dragons live on a few small islands in Indonesia, which is in Asia.
Jeremy Podeswa directed the season finale, The Dragon and the Wolf, and during an interview with The Huffington Post he revealed that Viserion was actually breathing a new form of mystical fire from his mouth.
Smaug's dragon-fine would not have been hot enough to destroy the One Ring. The malevolence that Sauron put inside of the Ring could only be destroyed in the Cracks of Doom, so Frodo was compelled to make the journey to Mordor.
Bilbo is invisible because he is wearing his ring, but Smaug can smell him. They talk about the treasure-trove and the dwarves' intent to reclaim it. All the while, Bilbo is looking for Smaug's weak spot, which he finally spies near his left breast.
Dragon-fire (even that of Ancalagon the Black) is described as not being hot enough to melt the One Ring; however, four of the Dwarven Rings are consumed by Dragon-fire.
This is the backbone for what many scientists say about dragons: they are too heavy, and too big, to obtain powered flight. Dragon's wings would need to be disproportionately large, or their bodies disproportionately weightless, for them to have any chance of getting airborne.
Meet the Echidna, an Incredible, Fire-Proof Spiny Anteater Smithsonian Magazine.
salminicola is the only known animal on Earth that does not breathe. If you spent your entire life infecting the dense muscle tissues of fish and underwater worms, like H. salminicola does, you probably wouldn't have much opportunity to turn oxygen into energy, either.
The reason that incendiary ammo is illegal in certain U.S. states is that they are a dangerous fire hazard. Certain states' climates face more of a danger to fire risk and those states have decided that incendiary ammo cannot be fired there.
Draco Lizards (Draco volans) are also known as the flying dragon. This lizard species is small in size, only growing up to 8.4 inches long, but is able to take flight like a dragon. There are around 40 species of Draco lizards.
Legality. The sale of Dragon's breath rounds is illegal in several states (Alaska, California, Florida, Hawaii, Illinois, Iowa, Massachusetts, and New York) and shipping may be restricted in other locations and cities due to their inherent fire hazard.
Peter Jackson certainly makes the assertion in the theatrical and extended editions of the Hobbit movies that Smaug and Sauron are not only well aware of each other, but are planning to ally with each other. Smaug even seems to have detailed knowledge of Sauron's coming plans.
Surprisingly, the bigger challenge to the reality of Smaug lies in his least surprising trait – an ability to fly. This becomes clear from an application of a bag of tricks widely used by physicists, known as scaling laws.
Although both the Balrog and Smaug are creatures of fire, and Gandalf is able to match them thanks to the power of his fire ring, defeating the Balrog takes far more spiritual prowess, which is why Gandalf is able to essentially 'level up' and comes back as Gandalf the White, whereas defeating such an immense physical ...
Bilbo is terrified, but goes to confront Smaug because he wants to give the dwarves a chance to obtain the lives they deserve.
Smaug is Not The Strongest Dragon
Undeniably, Smaug is the Greatest Dragon left in Middle Earth during the Third Age. Yet, he is not the strongest in its history. That title falls to Ancalagon the Black, the largest dragon ever to have existed in Middle-earth.
Why does Smaug hoard gold/gems? It is in the nature of dragons to do so. Magpies collect shiny objects, trapdoor spiders build trapdoors, and dragons hoard treasure. Morgoth originally bred the dragons as weapons, but some escaped the War of Wrath and became feral, living in the wastes of the north.
Instead of evaporating like normal Minecraft mobs, a dragon will fall to the ground as a corpse when it dies. To loot the dragon corpse, right-click on it repeatedly with an empty hand: items will drop off of it until it turns into a skeleton and, finally, disappears altogether.
Besides his endlessly-multiplying bloodthirsty wights, one of the Night King's most powerful weapons was Daenerys' old dragon Viserion, who was turned into an ice zombie at the end of season 7.
Veserion the Ice Dragon breathes blue fire not because he is "ice" but because he is a decomposing dragon and produces methane rather than the normal combustible salts that gives normal dragons orange flames.