Alright, thanks guys.
I was screwing around looking for minecraft papercraft, and I found a new mod that allows for more creatures. It's called the Mo' Creatures mod. It can give you dolphins and horses and stuff like that, but the problem I have with it is that some of the animals, like the "new" wolves, are too detailed to look properly minecraftian. But apparantly, you can go to the menu and turn some mobs off, like pirannahs.
Here's the link:
http://www.minecraftforum.net/topic/...and-name-tags/