Minecraft Username: Zeno78

Brief Description: /spawnmob [mob name]

Spawned a number of animals in tullamoore for Autschnn2012 and within 15 mins all were gone.

Instructions: /spawnmob command

How many times did you recreate this bug?: Just once as i didn't want to loose another 3200

Result: Mobs despawned

Expected Result: Mobs stay

Evidence:Autschnn2012 was there.