Look at a spawner and you can change it from a pig to any mob!
To do that... you must have the ILD spawners plugin! if you don't.. you can't do it! Look at a spawner and type in the command /spawner [mob]!
If you type in a invalid mob... then a error will occure!
Commands for this plugin are: /spawner!
Permissions for this plugin are: ildspawners.spawner!