static void Main(string[] args)
{
Animal[] animalArray = new Animal[3]; // Create animal array.
animalArray[0] = new Cat(); // Insert Cat class object.
animalArray[1] = new Bird(); // Insert Bird class object.
animalArray[2] = new Dog(); // Insert Dog class object.
foreach (Animal a in animalArray)
{
ILiveBirth b = a as ILiveBirth; // if implements ILiveBirth..
if (b != null)
{
Console.WriteLine("Baby is called: {0}", b.BabyCalled());
}
}
}