This Mod adds more creatures to the game.
Download + Installation instructions - Mo'Creatures v6.1.0 (for Minecraft 1.6.4)
Download + Installation instructions - MoCreatures v6.2.0 DEV R1 (for Minecraft 1.7.2)
Free Minecraft Download
1. Run the launcher (update Java if necessary);
2. On the right side type in your user name;
3. Choose a version from the list you want to play and click install;
4. Wait for it to finish installing and play!
Includes all versions since 1.0 to the latest 1.7.4