I play Creative mode on Minecraft and i want to disable every mob sheep cows zombies everything as all they do is get in the way when building and make me lag. is there anyway i can get rid of mobs all together? and please dont suggest setting grass to another block or making a server
I have no idea if they do anything like what you want, but single player commands and zombe's mod pack both can tweak the game in a lot of ways. Check the descriptions of both. There might be some option to do what you want.
There is a way to do it though you will need to play your creative mode on a server of your own. Simply create a server and set mob spawning off and animal spawning off. Then just connect to your own server and bam there you have no animals or mobs. If you need help doing that you can send me a pm and ill be happy to help you with it (: I know that you said you don't want to use a server but that is the only way I can see that you would be able to do so.