here is a COMPLETE list of combinations for dragons in Dragon City. which you'll get Dragon City Breeding guide inside
Combinations of dragons are split into 3 categories:
The HYBRID dragons
The LEGENDARY dragons
There are 46 dragons, Hybrid, 7 and 4 rare legendary.
Hybrid combinations Dragons
As you probably know, in Dragon City dragons hybrids are the result of the merger of two dragons of a base element (do not forget that you can also combine two dragon (one adult and one teenager) from the same element for a double element):