http://i.imgur.com/PHLyRrS.jpg
http://i.imgur.com/hnZBA2p.jpg
http://i.imgur.com/ymx7I1V.jpg
http://i.imgur.com/NNFvkNO.jpg
http://i.imgur.com/swcZ8bC.jpg
http://i.imgur.com/jORyWol.jpg
http://i.imgur.com/ctOyvLX.jpg
Seeing what is above, I assume this is happening in most places since the 1.6 new chunks ordeal but is there anyway of blocking even passive mobs from spawning liek as shown above or fix it to where it doesn't go so crazy?