Board Thread:Dragon City Gameplay Questions & Answers/@comment-25409719-20140911202531/@comment-779290-20140912132659

Actually you may not be able to breed the lower level sanctuary dragons if you have advanced your sanctuary to level 8. According to the discussions over at dragoncityguide.net the chances for getting lower level sanctuary dragons start decreasing around sanctuary level 5 and go to 0% by level 8. Thier breeding calculator also reflects this.