Please, read the rules before posting.
Be specific with your idea. Flesh it out a little bit.
New mobs have already been suggested. Aligators and humans have been already suggested, and in much greater detail.
Don't spam the emoticons.
Don't add useless stuff to the end of your thread, like a creeper equals TNT equals a bunch of fire. If you want, put that in your signature.
If you do want a lil of both you can get the yogbox. Plentyful mods of all sorts. Click here for it.
It has Mo'Creatures And Millinaire and like 12 more.
Use the installer on fresh minecraft Folder, now use installer.