Best Matches: Rooster, Rat, Monkey
The Dragon and the Rooster have common values, thus it is easy for them to lead a happy life. The Dragons are good at making money but have no idea managing money, however, the Rats are the best financial experts. The Dragons are also easily attracted by enthusiastic, cheerful, and intelligent Monkeys.
Bad Matches: Ox, Sheep, Dog
It's the interrelation of the specific Animal Years. And the 5 Elements. Any good site will confirm it.