diff --git a/cow.java b/cow.java
new file mode 100755
index 0000000..7743d25
--- /dev/null
+++ b/cow.java
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+/**
+ * Moobreeder is a simple cow breeding game to illustrate the principles of
+ * selective breeding to KS3 pupils.
+ *
+ * (c) Daniel Vedder 2018,
+ * Amano Christian School
+ */
+
+/*
+ * This file holds the cow class and associated methods.
+ */
+
+public class Cow
+{
+	private static int idCounter = 1;
+	
+	private int id;
+	private String name;
+	private String sex;
+	private int milk, strength, meat, aggression;
+
+	public Cow(String desiredSex)
+	{
+		//Default cow/bull
+		sex = desiredSex;
+		id = idCounter;
+		idCounter++;
+		name = makeName(sex, id);
+		milk = 1;
+		strength = 5;
+		meat = 1;
+		aggression = 10;
+	}
+
+	public Cow(Cow father, Cow mother)
+	{
+		//Constructor used for reproduction
+		//TODO
+	}
+
+	public String rateCow(Cow c, String use)
+	{
+		int rating = 0;
+		if (use == "dairy") {
+			rating = rateDairyCow(c);
+		}
+		else if (use == "plowing") {
+			rating = ratePlowCow(c);
+		}
+		else if (use == "meat") {
+			rating = rateMeatCow(c);
+		}
+		else {
+			//error
+		}
+		return "This is a "+rating2string(rating)+" cow for "+use+".";
+	}
+
+	private int rateDairyCow(Cow c)
+	{
+		//TODO
+	}
+
+	private int rateMeatCow(Cow c)
+	{
+		//TODO
+	}
+
+	private int ratePlowCow(Cow c)
+	{
+		//TODO
+	}
+
+	/*
+	 * Return a string rating for values between 0 and 20.
+	 */
+	private String rating2String(int rating)
+	{
+		if (rating < 1) return "useless";
+		else if (rating < 3) return "terrible";
+		else if (rating < 6) return "pretty bad";
+		else if (rating < 9) return "moderate";
+		else if (rating < 12) return "passable";
+		else if (rating < 15) return "fairly good";
+		else if (rating < 18) return "pretty good";
+		else if (rating < 20) return "very good";
+		else return "brilliant";
+	}
+	
+}