From MothCraft

With a MobCapture arrow, shoot a friendly mob like a cow, sheep, pig, chicken, or any other friendly mob.. and it will become an egg for you to transport wherever you need to! no more needing to lead the animal all across the map or into a nether portal just to have a personal farm at your house. Capturing an animal also takes 200 mothbux just to balance out how OP this is. You can buy a MobCapture arrow in the server shop in the main menu's shop menu.. or craft one using 8 redstone in a circle.

8 Redstone in a circle in a normal crafting table.