I was going to say Toothless seems extremely high/drugged in httyd 3, with his irises never contracting and all, even in dangerous situations.
But the sad thing is, I can’t. Toothless from httyd 1 & 2 would never act that way, never disregard Hiccup like he did, no matter how high/drugged/poisoned he was.
That is how badly they butchered our boy in httyd 3.
Seriously.












