diff --git a/section9/Animal.java b/section9/Animal.java
new file mode 100644
index 0000000..94133a0
--- /dev/null
+++ b/section9/Animal.java
@@ -0,0 +1,28 @@
+
+public abstract class Animal {
+    private String name;
+    private double weight;
+    
+    public Animal(String name, double weight) {
+        this.name = name;
+        this.weight = weight;
+    }
+    
+    public String getName() {
+        return name;
+    }
+    
+    public double getWeight() {
+        return weight;
+    }
+    
+    public void setName(String name) {
+        this.name = name;
+    }
+    
+    public void setWeight(double weight) {
+        this.weight = weight;
+    }
+    
+    public abstract String makeNoise();
+}
diff --git a/section9/AnimalDemo.java b/section9/AnimalDemo.java
new file mode 100644
index 0000000..7a27339
--- /dev/null
+++ b/section9/AnimalDemo.java
@@ -0,0 +1,19 @@
+class AnimalDemo {
+    public static void main(String[] args) {
+        Dog myDog = new Dog("Rover", 70);
+        Cat myCat = new Cat("Bear", 7);
+        
+        System.out.println(myDog.move());
+        System.out.println(myCat.move());
+        
+    }
+    
+    public static void printAnimals(Animal[] animals) {
+        for(Animal animal : animals) {
+            System.out.println(animal.getName());
+            System.out.println(animal.getWeight());
+            System.out.println(animal.makeNoise());
+            System.out.println();
+        }
+    }
+}
diff --git a/section9/Cat.java b/section9/Cat.java
new file mode 100644
index 0000000..9fc66b3
--- /dev/null
+++ b/section9/Cat.java
@@ -0,0 +1,16 @@
+
+public class Cat extends Animal implements IMovable {
+    public Cat(String name, double weight) {
+        super(name, weight);
+    }
+    
+    @Override
+    public String makeNoise() {
+        return "Meow!";
+    }
+
+    @Override
+    public String move() {
+        return "I'm stalking you, waiting on my dinner!";
+    }
+}
diff --git a/section9/Dog.java b/section9/Dog.java
new file mode 100644
index 0000000..5b094c4
--- /dev/null
+++ b/section9/Dog.java
@@ -0,0 +1,17 @@
+
+public class Dog extends Animal implements IMovable {
+    public Dog(String name, double weight) {
+        super(name, weight);
+    }//end ctor
+    
+    @Override
+    public String makeNoise() {
+        return "Woof!";
+    }
+    
+    @Override 
+    public String move() {
+        return "I'm wagging my tail and running!";
+    }
+    
+}
diff --git a/section9/IMovable.java b/section9/IMovable.java
new file mode 100644
index 0000000..d9e53b5
--- /dev/null
+++ b/section9/IMovable.java
@@ -0,0 +1,4 @@
+
+public interface IMovable {
+    String move();
+}