Board Thread:Questions and Answers/@comment-94.132.190.32-20130223221152/@comment-1649266-20130223222730

Very few combinations are 100% sure to produce the same thing every time. Most breeding combinations can produce two different results, some more than that. For example, breeding Medieval  + Alpine can produce Cool Fire, Soccer, Flaming Rock, Pearl or Armadillo. You may have to try more than once using the same dragons to get the one you want.