using System;

public class Program

{

    public static void Main()

    {

        DerivedClass1 d = new DerivedClass1();

        DerivedClass2 d1 = new DerivedClass2();

        d.Animal();

        d.Dog();

        d1.Tiger();

    }

}

class BaseClass1{

    public void Animal(){

        Console.WriteLine("Animal");

    }

}

class DerivedClass1 : BaseClass1{

    public void Dog(){

        Console.WriteLine("Dog");

    }

}

class DerivedClass2 : BaseClass1{

    public void Tiger(){

        Console.WriteLine("Tiger");

    }

}

​