diff --git a/src/main/java/io/zipcoder/polymorphism/Cat.java b/src/main/java/io/zipcoder/polymorphism/Cat.java
new file mode 100644
index 0000000..9816faf
--- /dev/null
+++ b/src/main/java/io/zipcoder/polymorphism/Cat.java
@@ -0,0 +1,17 @@
+package io.zipcoder.polymorphism;
+
+public class Cat extends Pet{
+    public Cat(String name) {
+        super(name);
+    }
+
+    public Cat() {
+
+    }
+
+    @Override
+    public String speak() {
+        super.speak();
+        return null;
+    }
+}
diff --git a/src/main/java/io/zipcoder/polymorphism/Dog.java b/src/main/java/io/zipcoder/polymorphism/Dog.java
new file mode 100644
index 0000000..76b36ce
--- /dev/null
+++ b/src/main/java/io/zipcoder/polymorphism/Dog.java
@@ -0,0 +1,20 @@
+package io.zipcoder.polymorphism;
+
+public class Dog extends Pet{
+
+    public Dog(String name) {
+        super(name);
+    }
+
+    public Dog() {
+
+    }
+
+    @Override
+    public String speak() {
+        super.speak();
+        return null;
+    }
+
+
+}
diff --git a/src/main/java/io/zipcoder/polymorphism/Lion.java b/src/main/java/io/zipcoder/polymorphism/Lion.java
new file mode 100644
index 0000000..f80dcf8
--- /dev/null
+++ b/src/main/java/io/zipcoder/polymorphism/Lion.java
@@ -0,0 +1,18 @@
+package io.zipcoder.polymorphism;
+
+public class Lion extends Pet{
+
+    public Lion(String name) {
+        super(name);
+    }
+
+    public Lion() {
+
+    }
+
+    @Override
+    public String speak() {super.speak();
+    String sound = "Rawr";
+    return sound;
+    }
+}
diff --git a/src/main/java/io/zipcoder/polymorphism/MainApplication.java b/src/main/java/io/zipcoder/polymorphism/MainApplication.java
index 668c627..2929533 100644
--- a/src/main/java/io/zipcoder/polymorphism/MainApplication.java
+++ b/src/main/java/io/zipcoder/polymorphism/MainApplication.java
@@ -1,4 +1,16 @@
 package io.zipcoder.polymorphism;
 
 public class MainApplication {
+    public static void main(String[] args){
+        Pet myPet = new Pet();
+        Pet myCat = new Cat();
+        Pet myDog = new Dog();
+        Pet myLion = new Lion();
+        myPet.speak();
+        myCat.speak();
+        myDog.speak();
+        myLion.speak();
+// would these methods be better in main method or pet method?
+
+    }
 }
diff --git a/src/main/java/io/zipcoder/polymorphism/Pet.java b/src/main/java/io/zipcoder/polymorphism/Pet.java
new file mode 100644
index 0000000..1eba931
--- /dev/null
+++ b/src/main/java/io/zipcoder/polymorphism/Pet.java
@@ -0,0 +1,30 @@
+package io.zipcoder.polymorphism;
+
+public class Pet{
+    public Pet(String name) {
+        this.name = name;
+    }
+
+    public Pet() {
+
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    String name;
+
+    public String speak(){
+
+
+        return null;
+    }
+
+
+
+}
diff --git a/src/test/java/io/zipcoder/polymorphism/CatTest.java b/src/test/java/io/zipcoder/polymorphism/CatTest.java
new file mode 100644
index 0000000..c0e75b1
--- /dev/null
+++ b/src/test/java/io/zipcoder/polymorphism/CatTest.java
@@ -0,0 +1,9 @@
+package io.zipcoder.polymorphism;
+
+import junit.framework.TestCase;
+
+public class CatTest extends TestCase {
+
+
+
+}
\ No newline at end of file
diff --git a/src/test/java/io/zipcoder/polymorphism/DogTest.java b/src/test/java/io/zipcoder/polymorphism/DogTest.java
new file mode 100644
index 0000000..999c69f
--- /dev/null
+++ b/src/test/java/io/zipcoder/polymorphism/DogTest.java
@@ -0,0 +1,9 @@
+package io.zipcoder.polymorphism;
+
+import junit.framework.TestCase;
+
+public class DogTest extends TestCase {
+
+    public void testSpeak() {
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/io/zipcoder/polymorphism/LionTest.java b/src/test/java/io/zipcoder/polymorphism/LionTest.java
new file mode 100644
index 0000000..1943587
--- /dev/null
+++ b/src/test/java/io/zipcoder/polymorphism/LionTest.java
@@ -0,0 +1,21 @@
+package io.zipcoder.polymorphism;
+
+import junit.framework.TestCase;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class LionTest extends TestCase {
+
+    @Test
+    public void testSpeak(){
+        //Give
+        Lion lion = new Lion("Im Lion Benny");
+        //When
+        String expected = "Rawr";
+        String actual = lion.speak();
+        //Then
+        Assert.assertEquals(expected,actual);
+
+    }
+
+}
\ No newline at end of file
diff --git a/src/test/java/io/zipcoder/polymorphism/PetTest.java b/src/test/java/io/zipcoder/polymorphism/PetTest.java
new file mode 100644
index 0000000..4b6fadf
--- /dev/null
+++ b/src/test/java/io/zipcoder/polymorphism/PetTest.java
@@ -0,0 +1,15 @@
+package io.zipcoder.polymorphism;
+
+import junit.framework.TestCase;
+
+public class PetTest extends TestCase {
+
+    public void testTestGetName() {
+    }
+
+    public void testTestSetName() {
+    }
+
+    public void testSpeak() {
+    }
+}
\ No newline at end of file