This is a great hack for the Xbox 360 Edition Minecraft it turns mobs upside down it works on all mobs except for the wither and the Ender Dragon. I did this in the xbox edition it may or may not work in other editions.
Step 1: What You Need
For this instructable to make mobs turn upside down what you need is
1 name tag (you could also use a spawn egg)
Step 2: What You Do
So what you do is place your anvil and put your name tag in and rename it Grumm Capital G and 2 M's then take it out of the anvil and just left click on a mob to name it Grumm and when you name it, it will turn upside down. You can also name a spawn egg and when you spawn with it it will spawn upside down. Other then being upside down the behave the same. With villagers you have to name the spawn egg as you can't name them. that's it hope you enjoyed this instructable & don't forget to vote.