Dragon Book

The Book of Dragons Keeps track of all the different dragons and their evolutions that you have possessed in Dragon City. In total, so far, there are 246 different evolutions, 3 for each dragon. The 3 different evolutions are the baby, adolescent and adult. Your total progress is kept track of in the top left corner when you open The Book of Dragons, which is accessed through pressing the "Storage, news and much more"-button (the globe situated above the "Build"-button).

In addition to this, a collection of either 4 or 5 dragons can be acquired to claim rewards consisting of between 2 - 5 gems, i.e. "The Frosty Collection", consisting of all the 3 stages of Ice Dragon, Blizzard Dragon, Icecube Dragon, Alpine Dragon and Cool Fire Dragon will reward you 2 gems.