class Program
    {
        static void Main(string[] args)
        {
            List<IAnimal> animals = new List<IAnimal>();
            animals.Add(new Mammal("Dog"));
            animals.Add(new Bird("Eagle"));
            animals.Add(new Fish("Shark"));
            animals.Add(new Mammal("Cat"));
            animals.Add(new Bird("Pigeon"));

            foreach (IAnimal animal in animals)
            {
                animal.DoMove();
                animal.DoEat();
            }

            Console.ReadLine();
        }
    }