Sandra Kelly 
Dragons of Decagon [EPUB ebook] 

Before man walked the earth Dragons were the most powerful beings that lived. They had a civilisation that could put any to shame. Defence, education, magic and harmony, but, sometimes trouble came their way.They never caused it, but neither did they back down on what was right, and they defended their own and their friends fiercely.And so it was, the call for help came from the Merpeople, they had a longstanding friendship, and often met up in Sea Valley to pool information and share a bountiful meal. Since the battle of the Wolfcrabs was past and no one had been hurt, it had been a peaceful time for everyone.