User blog:Nmtan/Review Waterfall & Mud Dragon Ratio

Source

 * 3 testing accounts used
 * Method: using facebook activity log page to lookup dragons (with support of program). So as long as the activity log is full & correct, the numbers below are correct

​Report

 * Account #1 (name Crock): Total 85 combinations (Terra Lv4 + Sea Lv4) in 2 days. Result: 43 Mud Dragons / 42 Waterfall Dragons. Ratio 1.02 : 1
 * Account #2 (name Drew): Total 35 combinations (Terra Lv4 + Sea Lv4) in 1 day. Result: 21 Mud Dragons / 14 Waterfall Dragons. Ratio 1.5 : 1
 * Account #3 (name Bob): Total 26 combinations (Terra Lv4 + Sea Lv4) in 1 day. Result: 12 Mud Dragons / 14 Waterfall Dragons. Ratio 0.86 : 1
 * Sum of three: Combinations: 146. Mud Dragons: 76. Waterfall Dragons: 70
 * My Conclusion: They are real 50% : 50% chance (exactly the same as the system, they're both Dificulty 2, no other dragon in the combination)

List of dragons
Very long list, so I put them here Sandbox/Mud_Waterfall