In DragonVale for the Android & iOS devices (iPhone, iPad, etc.), the Motley Dragon is a limited dragon with fire and plant attributes that seems to reference the band Motley Crew. It entered the market on March 28, 2013 and it is unknown how long it will be available.
The Motley Dragon has a base breeding time of 13 hours, sells for 13,000 coins, and earns 6,000 XP for successful breeding once you reach level 7.
There are a couple different reports on how to breed a Motley Dragon. Some claim that you need to breed any dragons that contain fire and plant attributes, but others claim that it can be bred with any two dragons regardless of attributes.
I haven’t had success breeding one yet, so leave comments with the combinations you used if you’re successful to verify which is true.