So, I was wondering if it would be possible for a race of reptilians to live in a climate similar to that of Germany or Scandinavia without having to hibernate for the winter months. They would be culturally similar to Germanic tribes and/or the Vikings. The would not be able to hibernate due to the war-like tendencies of the surrounding human clans. Would they just need to be more careful to avoid freezing to death? Would the hearth/long house be more important to them do to higher need for warmth from other sources?
If physical appearance is important, they will resemble Vurks from Star Wars (Colemam Trebor was one).
Edit: Answers can also address if this race was mesothermic since cold-blooded species cannot survive in cold temperature without hibernating and/or advanced technology.