diff --git a/src/main/java/com/sk89q/worldguard/bukkit/WorldConfiguration.java b/src/main/java/com/sk89q/worldguard/bukkit/WorldConfiguration.java
index 466b1c00..bae4a93a 100644
--- a/src/main/java/com/sk89q/worldguard/bukkit/WorldConfiguration.java
+++ b/src/main/java/com/sk89q/worldguard/bukkit/WorldConfiguration.java
@@ -176,6 +176,7 @@ public class WorldConfiguration {
     public boolean explosionFlagCancellation;
     public boolean disableDeathMessages;
     public boolean disableObsidianGenerators;
+    public boolean strictEntitySpawn;
 
     private Map<String, Integer> maxRegionCounts;
 
@@ -314,10 +315,13 @@ private void loadConfiguration() {
 
         summaryOnStart = getBoolean("summary-on-start", true);
         opPermissions = getBoolean("op-permissions", true);
+
         buildPermissions = getBoolean("build-permission-nodes.enable", false);
         buildPermissionDenyMessage = CommandUtils.replaceColorMacros(
                 getString("build-permission-nodes.deny-message", "&eSorry, but you are not permitted to do that here."));
 
+        strictEntitySpawn = getBoolean("strictness.block-entity-spawns-with-untraceable-cause", false);
+
         itemDurability = getBoolean("protection.item-durability", true);
         removeInfiniteStacks = getBoolean("protection.remove-infinite-stacks", false);
         disableExpDrops = getBoolean("protection.disable-xp-orb-drops", false);
diff --git a/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java b/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java
index 9cd32652..ff096467 100644
--- a/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java
+++ b/src/main/java/com/sk89q/worldguard/bukkit/listener/EventAbstractionListener.java
@@ -453,7 +453,36 @@ public void onBlockFromTo(BlockFromToEvent event) {
 
     @EventHandler(ignoreCancelled = true)
     public void onCreatureSpawn(CreatureSpawnEvent event) {
-        Events.fireToCancel(event, new SpawnEntityEvent(event, Cause.unknown(), event.getEntity()));
+        switch (event.getSpawnReason()) {
+            case DISPENSE_EGG:
+            case EGG:
+            case SPAWNER_EGG:
+                if (getWorldConfig(event.getEntity().getWorld()).strictEntitySpawn) {
+                    Events.fireToCancel(event, new SpawnEntityEvent(event, Cause.unknown(), event.getEntity()));
+                }
+                break;
+            case NATURAL:
+            case JOCKEY:
+            case CHUNK_GEN:
+            case SPAWNER:
+            case LIGHTNING:
+            case BUILD_SNOWMAN:
+            case BUILD_IRONGOLEM:
+            case BUILD_WITHER:
+            case VILLAGE_DEFENSE:
+            case VILLAGE_INVASION:
+            case BREEDING:
+            case SLIME_SPLIT:
+            case REINFORCEMENTS:
+            case NETHER_PORTAL:
+            case INFECTION:
+            case CURED:
+            case OCELOT_BABY:
+            case SILVERFISH_BLOCK:
+            case MOUNT:
+            case CUSTOM:
+            case DEFAULT:
+        }
     }
 
     @EventHandler(ignoreCancelled = true)