public class Penguin extends Bird
{
  // no new attributes -- just use the ones from Animal & Bird

  public Penguin()
  {
    System.out.println("  just created a penguin");
  }

  public boolean canFly()
  {
    return false;
  }

  public void feed()
  {
    super.feed();
    System.out.println("Penguins love ice cream.");
  }

  public String toString()
  {
    return "Tux";
  }
}