Cow Spawn Egg
minecraft:cow_spawn_eggThe Cow Spawn Egg is a Creative-mode-only item that instantly spawns a cow when used on a block surface. It can also be used on a monster spawner to set it to spawn cows, or on an adult cow to spawn a calf.
FAQ
How do I get a Cow Spawn Egg?
It is only obtainable in Creative mode, from the creative inventory, or via commands; pick-blocking an existing cow also gives one.
What happens if I use a Cow Spawn Egg on a monster spawner?
It changes the spawner's mob type to cow, so it will spawn cows going forward.
Can I spawn a baby cow with the egg?
Yes, using the spawn egg directly on an adult cow spawns a baby calf instead of an adult.
Can I get special-looking cows by naming them before spawning?
Naming a spawn egg on an anvil before use can trigger special mob behaviors for certain names, such as "Johnny" or "jeb_", though most named-mob effects apply to other mob types.