Talk:Defend Berk/@comment-44215132-20191023100326/@comment-25114779-20191023220841

The number in the upper right corner of each dragon's portrait is that particular Dragon's total Battle Value at the current level for that Dragon (12 to 150). The number increases every time you level up that one Dragon. Since the difficulty of play is based on what Battle Level your Dragons are in the game, I would suggest leveling up your strongest "Battle Value" dragons.