"Creature foci are used in the seer stone, and instruct it to search for nearby critters (sheep, cows, etc)."
The creature foci are only used in giving the seer stone the function to search for and detect non-hostile mobs like pigs, cows and sheep.
Crafting EditTo craft the creature focus, you need 1 raw porkchop, 1 standard focus, 1 feather and 1 black wool. The crafting recipe is; 1 raw porkchop on the top, 1 standard focus in the middle, 1 feather on the middle right and 1 black wool on the bottom. This crafting recipie is NOT universal.
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