I think if grimmel truly killed off as many night fury’s as he said it would have been common knowledge in the httyd world because in the first movie it was said no one has ever killed a night fury those are two very different story’s personally I think grimmel realized the commodity of night fury’s being rare and just leaned into it

11:25 "Specially in THE ONLY MOVIE where Drago appears" 😂

For number 15, in the episode where with the wing maidens inside "Race to the Edge" snotlout was thrown off of hookfang due to how hookfang was acting. Hookfang was senses the weather and started going crazy. When they went to look for snotlout hookfang looked scared and worried when he flew back into the storm.

I have a theory that a younger toothless flew a bit too far from his pack while they were heading to wherever the light figure was heading to or coming from or was a far more curious baby than normal that got lost while exploring and got caught in the Red Death mind control

fire balls might be a form of communication?,really was that single singstail in one episode lighting up an island expecting hiccup to dive into or something lol, bro was calling for backup ,so yeah those are forms of communications :face-green-smiling::face-green-smiling:

For 14, I should note that the person who wrote the reddit post attributed shot limit to something directly caused by feelings of hopelessness, though as someone else (partially) pointed out later, the fight or flight response would also have a lot to do with this. Dragons are intelligent and (most) aren't immediately prone to violence, so it's more likely they just recognize a situation as hopeless and, as a result, stop firing, using their energy instead to get away. Dramillions are also the only dragons capable of sharing their firepower with others. Though I think the communication thing is still fairly relevant because the dragons in Valka's nest reacted well to supposedly offensive weapons (Nightmare fire and Zippleback explosions) from Inferno, seeing them as more spectacle than attack. It's even been stated that Hiccup uses Inferno to connect with dragons, which wouldn't be possible if they were treated as weapons.

Source: I wrote the post.

I might just be confused with what he said but the great protector doesn’t actually live on vanahiem (sorry if it’s spelled wrong) but lives with the defenders of the wing and like most other dragons it seems to be its final resting place

My favourite dragon species is stormcutter

14:17 there's always a post-apocalyptic theory

Hiccup could have been for like viggo because both character are really smart

Oh yeah and for number 14 it spitelout tells us about a species of dragons that uses fire to communicate in the httyd race to the edge series

(I forgot what the species was called)

My opinion on each:
Number 20: Personally, I think it's more a bond thing
Number 19: I saw a theory that said they come from mediterranean coast and it sounds pretty logic to me.
Number 18: For me, if 19 is true, 18 is.
Number 17: Maybe a natural phenomenon called natural selection could explain that
Number 16: For me Vanaheim is only for dragons that live very close to it. Like, only taking the barbaric archipelago, there are really a lot of dragons, and the flight could be very very long. So for the whole world... And forever wing dragon wtf are you speaking about that's an Eruptodon...
Number 15: For me, Night Fury are not necesserally dragon hunters, but very territorial dragons, that need strong firepower to defend themselves or their territory, against deathgrippers or somethings like that for instance.
Number 14: Of course fire can be used to communicate things, like smoke signals. For dramillion, that are very intelligent dragons, it's almost certain for me...
Number 13: Classic theory tbh. I don't really see how he could have only his leg badly injured if that's not that...
Number 12: It was clearly something to show that she knows even more than Hiccup about dragons, but there is two possibilities: either she knew a night fury, either another dragon species have that.
Number 11: That's why they are called "night fury"... because they are black... That's clearly two species/subspecies...
Number 10: Drago and Grimmel are two dark reflections of Hiccup. Drago is violent with his dragon, and not very clever, and Grimmel is more clever, and in a sense, less violent than Drago.
Number 9: Don't like this theory, but The Nine Realms apparently wants it canon so...
Number 8: I don't really understand the meaning of this theory... like, did you mean that the hidden world was created to protect dragons? Like, no, it's just an environment that only dragons can access, making it a world of dragons.
Number 7: The problem is that the first film is officially in 1010 and The Nine Realms on the XXIth century...
Number 6: Okay, so you speak about The Nine Realms... So... For me, they are a dynasty of Hidden World king, and even being the king, they shouldn't be granted the alpha power from their birth, and there is no reason other dragons couldn't have it, or that only one dragon could have it... They are clearly a new species that evolved. This series is total bullshit...
Number 5: When you say "human haven't visited the whole world," you mean Hiccup right? Because Drago's empire stretch from China to Africa's Atlantic Coast to Iceland/Barbaric Archipelago. That's huge. Way bigger that mongol empire. That's like 35% of the world that gigantic... And Borg visited the Vinland before there was even the Vinland (that's around 1025 or something like that)... And isn't it the same as number 18?
Number 4: Humans are megafauna, so there are big and strong animals. They are brave creatures, with high cognition and very advance technology, able to use it to fly, swim, and move very fast. They have good sight, good audition, and a relatively good smell too. But are they the ancestors of all animals? No! 😅    Night Furies haven't evolved backwards on other dragons... That's even one of my main criticism about The Nine Realms, with its speed stinger that can't even compete with RTTE's ones. If dragons evolved from something, it's from a marine snake: there is a lot of snake dragons, there are venomous, often they live in water... And they would have quickly evolved in a "normal looking" family, an insectoid one and a reptile looking one.
Number 3: You can take every dragon and say they are hybrids. Hybrids are generally not able to reproduce. And, the chimeragons, that are the only hybrids made like that in the universe, are contemporaries to Hiccup... But night furies may have a common ancestor with Skrills yeah.
Number 2: In Rise of Berk, when Toothless become titan, I'm pretty sure I remember that you obtain the blue skin.
Number 1: Bro... wtf is this theory? It's canon that their descendants are still there in modern times. I would love that this theory is true, but The Nine Realms came and destroyed everything...

I have a theory-so we all know how the light fury and the night theories are pretty similar but still different in their own way right? So according to what the entire Dragon book and how to train your Dragon, it says nothing about the night fury, or the light fury even having any connection towards the lightning, besides “the offspring of lightning and death itself” thing that hiccups says in the first movie. There’s a theory that in desperation of a night fury, trying to save their bloodline, they mated with a skrill. Now this theory may not be as strong as the other ones, but it would make sense on how toothless could use lightning and the light fury couldn’t. He even glowed blue from the lightning when he used it. This could mean that he is a crossbreed between a skrill and a night fury, or I should say a light fury. Because toothless has some similar traits to a skrill (anatomy wise) then a light fury (also anatomy wise) meaning that the light fury could’ve had the more dominant anatomy trait while the skrill could’ve had more ability dominant traits.
I don’t know take this with the grain of salt, but it does make sense to me

Number 13 is canonically true, mentioned BY HICCUP in HTTYD two

14:06 and the dragons could be a science experiment that led the society to falling!

No one talks about the other night and light furies you could see in the crowd of the hidden world

For number 9 it was confirmed in httyd the nine realms

it says in httyd3 that the night furys cannot survive in the cold

Toothless was originally a small cat-like  dragon

umm in 13 didnt hiccup confirm this in the second movie when he meets valka????