diff --git a/Herd.java b/Herd.java
index cd2b230..804caab 100755
--- a/Herd.java
+++ b/Herd.java
@@ -24,12 +24,12 @@
 
 	private Herd()
 	{
-		herd = new ArrayListy<Cow>();
+		herd = new ArrayList<Cow>();
 		parents = new Cow[] {null, null};
 		offspring = new Cow[] {null, null};
-		for (i = 0; i < initialSize; i++) {
+		for (int i = 0; i < initialSize; i++) {
 			String sex = "male";
-			if (i %% 2 == 0) sex = "female";
+			if ((i % 2) == 0) sex = "female";
 			herd.add(new Cow(sex));
 		}
 	}
@@ -42,19 +42,35 @@
 		return singleton;
 	}
 
+	public Cow getCow(int id)
+	{
+		for (int c = 0; c < herd.size(); c++) {
+			if (herd.get(c).getID() == id)
+				return herd.get(c);
+		}
+		return null;
+	}
+
 	public void removeCow(int id)
 	{
-		//TODO
+		Cow c = getCow(id);
+		if (c != null) herd.remove(c);
 	}
 
 	public void setParent(int id)
 	{
-		//TODO
+		Cow p = getCow(id);
+		if (p == null) return;
+		if (p.getSex() == "male") parents[0] = p;
+		else if (p.getSex() == "female") parents[1] = p;
 	}
 
 	public void removeParent(int id)
 	{
-		//TODO
+		if (parents[0] != null && parents[0].getID() == id)
+			parents[0] = null;
+		else if (parents[1] != null && parents[1].getID() == id)
+			parents[1] = null;
 	}
 
 	public String checkBreeding()
@@ -66,16 +82,27 @@
 	public void breed()
 	{
 		//TODO
+		//randomly generate either one or two offspring
+		//breed the parents to create the offspring
 	}
 
 	public void keepChild(int id)
 	{
-		//TODO
+		int o = -1;
+		if (offspring[0] != null && offspring[0].getID() == id) o = 0;
+		else if (offspring[1] != null && offspring[1].getID() == id) o = 1;
+		if (o >= 0) {
+			herd.add(offspring[o]);
+			offspring[o] = null;
+		}
 	}
 
 	public void discardChild(int id)
 	{
-		//TODO
+		int o = -1;
+		if (offspring[0] != null && offspring[0].getID() == id) o = 0;
+		else if (offspring[1] != null && offspring[1].getID() == id) o = 1;
+		if (o >= 0) offspring[o] = null;
 	}
 
 	public void saveHerd(String filename)