diff --git a/src/backend/Agent.java b/src/backend/Agent.java
index bc71b36..9a8cc1c 100644
--- a/src/backend/Agent.java
+++ b/src/backend/Agent.java
@@ -33,7 +33,7 @@ public abstract class Agent {
 	// Does whatever the agent does during a step
 	// then returns a boolean
 	// if false, agent dies at end of turn
-	// see step function in Simulator
+	// see step function in Simulator    
 	public abstract boolean liveTurn(ArrayList<Agent> neighbors, Simulator world);
 
 
diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index e77f48c..4adbe69 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -11,8 +11,8 @@ public class Simulator extends Thread {
 
 	private MyInterface mjf;
 
-	private int COL_NUM = 100;
-	private int LINE_NUM = 100;
+	private int COL_NUM = 10;
+	private int LINE_NUM = 10;
 	private final int LIFE_TYPE_NUM = 4;
 	//Conway Radius : 1
 	private final int LIFE_AREA_RADIUS = 1;
@@ -81,7 +81,6 @@ public class Simulator extends Thread {
 			System.out.println("wrong file buddy, this one's empty");
 		}else if(row.size() <= 0) {
 			System.out.println("wrong file buddy, this one's does not have survival rules, won't work");
-			return;
 		}else {
 			try {
 	            for (int x = 0; x < surviveCells.length; x++) {
@@ -217,19 +216,25 @@ public class Simulator extends Thread {
 		// to modify agent behavior, see liveTurn method
 		// in agent classes
 		
-		
-        ArrayList<Agent> newAgents = new ArrayList<>();
+		for (int i = agents.size() - 1; i >= 0; i--) {
+            Agent agent = agents.get(i);
+            ArrayList<Agent> neighbors = this.getNeighboringAnimals(agent.getX(), agent.getY(), ANIMAL_AREA_RADIUS);
+            if (!agent.liveTurn(neighbors, this)) {
+                agents.remove(i);
+            }
+        }
+        /*ArrayList<Agent> newAgents = new ArrayList<>();
 		for(Agent agent : agents) {
 			ArrayList<Agent> neighbors =
 					this.getNeighboringAnimals(
 					agent.getX(),
 					agent.getY(),
 					ANIMAL_AREA_RADIUS);}
-			/*if(!agent.liveTurn(
+			if(!agent.liveTurn(
 					neighbors,
 					this)) {
 				agents.remove(agent);
-			{*/
+			}*/
         
 
         // Apply Game of Life rules
@@ -328,8 +333,8 @@ public class Simulator extends Thread {
 		} else if (clickActionFlag==2) { // wolf
 			ArrayList<Agent> nearby=getNeighboringAnimals(x,y,1);
 			if (nearby.isEmpty()) {
-				Sheep sheep = new Sheep(x,y);
-				agents.add(sheep);
+				Wolf wolf = new Wolf(x,y);
+				agents.add(wolf);
 			}else {
 				for (Agent animal:nearby) {
 					agents.remove(animal);
@@ -373,7 +378,15 @@ public class Simulator extends Thread {
 		}
 		return inArea;
 	}
-
+	public String typeAnimals(int x , int y,ArrayList<Agent> neighbor) {
+		//ArrayList<Agent> neighbor =getNeighboringAnimals(x,y,1);
+        Agent agent = neighbor.get(0);
+        if (agent instanceof Wolf) {
+            return "Wolf";
+        } else  {
+            return "Sheep";
+        } 
+    }
 	/**
 	 * set value of cell
 	 * @param x coord of cell
@@ -596,8 +609,10 @@ public class Simulator extends Thread {
 	 
 	 
 	    public void startSimulation() {
-	        if (isWorldEmpty()) {
+	        if (isWorldEmpty() & getWidth()==100 & getHeight()==100) {
 	        	mjf.clicLoadFileButtonCSV("World/baseworld.csv");
+	        }else {
+	        	mjf.generateRandomBoard();
 	        }
 	        
 	             
diff --git a/src/backend/Wolf.java b/src/backend/Wolf.java
index 584f4b0..b8013fa 100644
--- a/src/backend/Wolf.java
+++ b/src/backend/Wolf.java
@@ -26,8 +26,13 @@ public class Wolf extends Agent {
 	 * as you wish
 	 */
 	public boolean liveTurn(ArrayList<Agent> neighbors, Simulator world) {
-		if(world.getCell(x, y)==1) {
-			world.setCell(x, y, 0);
+		//ArrayList<Agent> nearby=world.getNeighboringAnimals(x,y,1); //look if the cell has an agent
+		if (!neighbors.isEmpty()) {
+			if(world.typeAnimals(x,y, neighbors)== "Sheep") {
+				Sheep sheep = new Sheep(x,y) ;
+				world.getAnimals().remove(sheep);	
+			}
+				
 		} else {
 			hunger++;
 		}