Board Thread:Dragon City Questions and Answers/@comment-9584828-20130515135653/@comment-4616966-20130515142357

Petroleum


 * Mud + Hedgehog


 * Mud + Venom


 * Waterfall + Hedgehog


 * Waterfall + Venom

Poo


 * Any of Legend Dragon ( Legendary, Crystal, Mirror, Wind ) + Petroleum / Pirate

Just suggestion.. i can't guarantee you.. depends on your luck.. :P