--- ../src-base/minecraft/net/minecraft/entity/EntityAgeable.java
+++ ../src-work/minecraft/net/minecraft/entity/EntityAgeable.java
@@ -10,6 +10,36 @@
 {
     private float field_98056_d = -1.0F;
     private float field_98057_e;
+    public boolean ageLocked = false; // CraftBukkit
+
+    // Spigot start
+    @Override
+    public void inactiveTick()
+    {
+        super.inactiveTick();
+
+        if (this.worldObj.isRemote || this.ageLocked)
+        {
+            // CraftBukkit
+            this.setScaleForAge(this.isChild());
+        }
+        else
+        {
+            int i = this.getGrowingAge();
+
+            if (i < 0)
+            {
+                ++i;
+                this.setGrowingAge(i);
+            }
+            else if (i > 0)
+            {
+                --i;
+                this.setGrowingAge(i);
+            }
+        }
+    }
+    // Spigot end
     private static final String __OBFID = "CL_00001530";
 
     public EntityAgeable(World p_i1578_1_)
@@ -37,7 +67,7 @@
                     {
                         entityageable.setGrowingAge(-24000);
                         entityageable.setLocationAndAngles(this.posX, this.posY, this.posZ, 0.0F, 0.0F);
-                        this.worldObj.spawnEntityInWorld(entityageable);
+                        this.worldObj.addEntity(entityageable, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER_EGG); // CraftBukkit
 
                         if (itemstack.hasDisplayName())
                         {
@@ -48,7 +78,7 @@
                         {
                             --itemstack.stackSize;
 
-                            if (itemstack.stackSize <= 0)
+                            if (itemstack.stackSize == 0)    // CraftBukkit - allow less than 0 stacks as "infinite"
                             {
                                 p_70085_1_.inventory.setInventorySlotContents(p_70085_1_.inventory.currentItem, (ItemStack)null);
                             }
@@ -99,19 +129,21 @@
     {
         super.writeEntityToNBT(p_70014_1_);
         p_70014_1_.setInteger("Age", this.getGrowingAge());
+        p_70014_1_.setBoolean("AgeLocked", this.ageLocked); // CraftBukkit
     }
 
     public void readEntityFromNBT(NBTTagCompound p_70037_1_)
     {
         super.readEntityFromNBT(p_70037_1_);
         this.setGrowingAge(p_70037_1_.getInteger("Age"));
+        this.ageLocked = p_70037_1_.getBoolean("AgeLocked"); // CraftBukkit
     }
 
     public void onLivingUpdate()
     {
         super.onLivingUpdate();
 
-        if (this.worldObj.isRemote)
+        if (this.worldObj.isRemote || this.ageLocked)   // CraftBukkit
         {
             this.setScaleForAge(this.isChild());
         }