diff --git a/paper-api/src/main/java/org/bukkit/entity/Allay.java b/paper-api/src/main/java/org/bukkit/entity/Allay.java
index 608cd38cb2..e5e79202b9 100644
--- a/paper-api/src/main/java/org/bukkit/entity/Allay.java
+++ b/paper-api/src/main/java/org/bukkit/entity/Allay.java
@@ -1,9 +1,106 @@
 package org.bukkit.entity;
 
+import org.bukkit.Location;
+import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.bukkit.inventory.InventoryHolder;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * An Allay.
  */
 public interface Allay extends Creature, InventoryHolder {
+
+    /**
+     * Gets if the allay can duplicate.
+     * <br>
+     * <b>Note:</b> Duplication is based when the
+     * {@link #getDuplicationCooldown} its lower than zero.
+     *
+     * @return if the allay can duplicate itself.
+     */
+    public boolean canDuplicate();
+
+    /**
+     * Sets if the allay can duplicate.
+     * <br>
+     * <b>Note:</b> this value can be overridden later by
+     * {@link #getDuplicationCooldown} if is lower than zero. You can also use
+     * {@link #setDuplicationCooldown} to allow the allay to duplicate
+     *
+     * @param canDuplicate if the allay can duplicate itself
+     */
+    public void setCanDuplicate(boolean canDuplicate);
+
+    /**
+     * Gets the cooldown for duplicating the allay.
+     *
+     * @return the time in ticks when allay can duplicate
+     */
+    public long getDuplicationCooldown();
+
+    /**
+     * Sets the cooldown before the allay can duplicate again.
+     *
+     * @param cooldown the cooldown, use a negative number to deny allay to
+     * duplicate again.
+     */
+    public void setDuplicationCooldown(long cooldown);
+
+    /**
+     * Reset the cooldown for duplication.
+     *
+     * This will set the cooldown ticks to the same value as is set after an
+     * Allay has duplicated.
+     */
+    public void resetDuplicationCooldown();
+
+    /**
+     * Gets if the allay is dancing.
+     *
+     * @return {@code True} if it is dancing, false otherwise.
+     */
+    public boolean isDancing();
+
+    /**
+     * Causes the allay to start dancing because of the provided jukebox
+     * location.
+     *
+     * @param location the location of the jukebox
+     *
+     * @throws IllegalArgumentException if the block at the location is not a
+     * jukebox
+     */
+    public void startDancing(@NotNull Location location);
+
+    /**
+     * Force sets the dancing status of the allay.
+     * <br>
+     * <b>Note:</b> This method forces the allay to dance, ignoring any nearby
+     * jukebox being required.
+     */
+    public void startDancing();
+
+    /**
+     * Makes the allay stop dancing.
+     */
+    public void stopDancing();
+
+    /**
+     * This make the current allay duplicate itself without dance or item
+     * necessary.
+     * <b>Note:</b> this will fire a {@link CreatureSpawnEvent}
+     *
+     * @return the new entity {@link Allay} or null if the spawn was cancelled
+     */
+    @Nullable
+    public Allay duplicateAllay();
+
+    /**
+     * Gets the jukebox the allay is set to dance to.
+     *
+     * @return the location of the jukebox to dance if it exists
+     */
+    @Nullable
+    public Location getJukebox();
 }
diff --git a/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java b/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
index 6d5c81824c..e9de00e9e4 100644
--- a/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
+++ b/paper-api/src/main/java/org/bukkit/event/entity/CreatureSpawnEvent.java
@@ -96,7 +96,7 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
          */
         VILLAGE_INVASION,
         /**
-         * When an animal breeds to create a child
+         * When an entity breeds to create a child, this also include Shulker and Allay
          */
         BREEDING,
         /**
@@ -189,6 +189,10 @@ public class CreatureSpawnEvent extends EntitySpawnEvent {
          * When a tadpole converts to a frog
          */
         METAMORPHOSIS,
+        /**
+         * When an Allay duplicate itself
+         */
+        DUPLICATION,
         /**
          * When a creature is spawned by the "/summon" command
          */