public static void Main(string[] args)
        {
            Dog      doggie = new Dog();
            Cat      cattie = new Cat();
            Bird     birdie = new Bird();
            Squirrel squirt = new Squirrel();
            Rabbit   roger  = new Rabbit();

            Console.WriteLine(doggie.TalkToOwner());
            Console.WriteLine(cattie.TalkToOwner());
            Console.WriteLine(birdie.TalkToOwner());
            Console.WriteLine(squirt.WhatDoIEat());
            Console.WriteLine(roger.WhatDoIEat());
        }