How do you get a dragon wild ones

First, obtain membership by paying for it through credit card or through treats of equal value (16 treats). Then click on the monkey at the home screen near the bottom. He will look like he's from the casino. Then click on "Collection Raffle". The first spin for each item is free but after that you will need to pay treats to spin again. Collect all the necessary pieces needed to obtain the dragon and then it will be unlocked. Then buy it from the store.