I was going back over the archeology. It seems to me, all of the Norse dragons were horned snakes, often with arms, and occasionally with wings. None of them have legs, during the Viking Period, 800-1100.
The earliest image that I could find of a ‘modern’ dragon, with arms, legs, and wings, is in an illuminated manuscript, a bestiary written in England, around year 1250, and in The British Library. (Harley manuscript 3244.)
There are many different kinds of depictions of the dragon. Some have arms and wings, some have legs and wings − and then it happened. This artist in England combined the concepts and gave the snake both arms and legs, and a set of wings for each!
Generally speaking.
The Norse dragon is a snake with horns, with eagle arms, and sometimes eagle wings. The tail is prehensile and sometimes carries an object.
The English dragon is (often) a snake with ears, a more wolflike head, and bat wings. It also tends to associate more strongly with a river, and include fish or eel fins. It usually has legs (not arms), and tends to look more bird like when walking on its legs with its wings spread and its tail in the air.
This English dragon in the manuscript reminds me of your Red Dragon.