Channel Hop: Due to Cartoon Network having changing channel expectations (using more 2-D Canadian material and later, filling the schedule with nothing but reruns of Teen Titans Go! for a time because it was cheap to make and very profitable), Dragons season 3 was moved to Netflix as Dragons: Race to the Edge. Unfortunately, the first 2 seasons weren't moved with them right away, leaving questions about who all the other characters around Berk are.
Dawson Casting: JB Blanc plays Ryker, the older brother to Viggo, who in turn is played by Alfred Molina. Molina is actually fifteen years older than Blanc, though he doesn't sound it.
I Knew It: There was seriously a lot of doubt Alvin was killed by the Skrill.
No Budget: One episode revolves around rescuing the farm animals to save the vikings, which are enduring a blizzard. Said animals, yaks, chickens, and sheep, consist of less than thirty animals. Seriously, there are only three sheep, a handful of chickens, and twenty yaks would be a rough estimate, yet it is treated like the entire fate of the vikings and their dragons is on the line if these animals are not brought back. Thousands of people and dragons are expected to live on thirty or so animals and what little milk and eggs said animals can produce, or at least need them enough to bother going out into a freezing storm with no coats, risking freezing to death, to retrieve these animals.