Item Duplication by Mules/Donkeys

Basically people use Mule's / Donkey's to duplicate items I have not really 100% checked if this was reported by anyone else but here is the youtube video I found about it. http://www.youtube.com/watch?v=-UbfcEBRSic

Hope this has helped to make Minecraft better and fairer I have contacted a lot of server owners and let them know resulting in horses being disabled on a lot of servers I hope me informing you gets this issue resolved quickly.

Killercyborg.