diff --git a/src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java b/src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java
index 40a3af1..60e5711 100644
--- a/src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java
+++ b/src/me/ryanhamshire/GriefPrevention/PlayerEventHandler.java
@@ -35,6 +35,7 @@ import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.entity.Animals;
 import org.bukkit.entity.Boat;
+import org.bukkit.entity.Creature;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Hanging;
 import org.bukkit.entity.Player;
@@ -794,6 +795,22 @@ class PlayerEventHandler implements Listener
 				}
 			}
 		}
+		
+		//if preventing theft, prevent leashing claimed creatures
+		if(GriefPrevention.instance.config_claims_preventTheft && entity instanceof Creature && player.getItemInHand().getType() == Material.LEASH)
+		{
+		    Claim claim = this.dataStore.getClaimAt(entity.getLocation(), false, playerData.lastClaim);
+            if(claim != null)
+            {
+                String failureReason = claim.allowContainers(player);
+                if(failureReason != null)
+                {
+                    event.setCancelled(true);
+                    GriefPrevention.sendMessage(player, TextMode.Err, failureReason);
+                    return;                    
+                }
+            }
+		}
 	}
 	
 	//when a player picks up an item...