Atlas Dragons carry the weights of tiny little worlds on their shoulders. On every Atlas Dragon is a miniature ecosystem, complete with microscopic flora and fauna. All that extra weight can be bothersome at times, but Atlas Dragons bear the burden proudly, happy to have the responsibility.
Remember: if you're caring for an Atlas Dragon, you're also caring for an entire civilization! Be mindful of your wee world when you're finding a home for your Atlas Dragon. If you put your Atlas dragon near Fire Dragons, it means global warming for the Atlas Dragon. If your Atlas Dragon is near a Poison Dragon, the little world becomes polluted.
Atlas Dragons never migrate far from where they were hatched. If they did, the ecosystems on their heads would change drastically. For example, if Atlas Dragons fly too high, the worlds on their heads freeze over, causing snowstorms on a global scale.
Amazingly, the global growths on Atlas Dragons' heads bear a remarkable resemblance to Earth. This has led some philosophers to believe that these Dragons carry exact replicas of Earth, right down to the people and dragons,on their shoulders, seemingly creating tiny dimensions! Perhaps even this Earth exists on the back of a colossal Atlas Dragon! But that couldn't be true... could it?