you can make as many pens as you want. i used cauldrons and put water in them. i also used fence and a gate. and i used cows. please write what i could make for other instructables in the comments below. i hope you like it.
Step 1: The Start of the Farm
put fence and a gate on the ground. then put cows in it.
Step 2: Cauldrons
put cauldrons in your fence and put water in them and you have your animal farm.