public class TestProgram {
    
    
    public static void main(String[] args) {
        
        Dog d = new Dog("Kato");
        Cat c = new Cat("Rusty");
        Bird b = new Bird("Bugs");
        
        b.setColor("blue");
        
        System.out.println(d);
        System.out.println(c);
        System.out.println(b);
        
    }
}