static void Main(string[] args)
{
Cat cat = new Cat();
Dog dog = new Dog();
Cow cow = new Cow();
YellowBird yellowBird = new YellowBird();
GoldFish goldFish = new GoldFish();
Frog frog = new Frog();
cat.MakeNoise();
cat.Walk();
cat.Run();
dog.MakeNoise();
dog.Walk();
dog.Run();
yellowBird.MakeNoise();
yellowBird.Fly();
goldFish.Swim();
frog.Swim();
frog.Walk();
Console.ReadLine();
}