User blog comment:Switty/Sky Dragon and Fusion question!/@comment-5540159-20130521023816

Hello Switty, unfortunately TinyCo has made fusion a very frustrating business. Each biome and tier has a preferred common dino that gets fused very often and in order to sucessfully fuse a rare dino it takes MULTIPLE tries to acheive this. That is why we try to compile reports of attempts so you can have an educated guess as to which biome combinations have been the most successful for others. If you could hurry hatch more tier 2 dinos, then at least you will avoid the time wasted fusing fodder. The success rate of every fusionis low <50%. The older your dino, the more likely the fusion will succeed. However there is no guarantee what the result is. If you have more questions about fusion, drop by the chatroom.