static void Main(string[] args)
{
Animal animal = new Animal();
Vertebrate vert = new Vertebrate();
Invertebrate invert = new Invertebrate();
WarmBlooded warm = new WarmBlooded();
ColdBlooded cold = new ColdBlooded();
JointedLegs joint = new JointedLegs();
WithoutLegs without = new WithoutLegs();
Mammals bear = new Mammals();
Bird eagle = new Bird();
Fish guppy = new Fish();
Reptile snake = new Reptile();
Amphibian frog = new Amphibian();
Platypus platypus = new Platypus();
// Console.WriteLine(platypus.layEggBeakVenom());
Penguin pinguin = new Penguin();
Amphibian theFrogPrince = new Amphibian();
Console.WriteLine(theFrogPrince.croak());
Console.WriteLine(theFrogPrince.talk());
Bird parrot = new Bird();
Console.WriteLine(parrot.talk());
Console.WriteLine("Hello World!");
}
static void Main(string[] args)
{
Vertibrate vert = new Vertibrate();
Bird bluejay = new Bird();
NonFlyingBird penguin = new NonFlyingBird();
Platypus platypus = new Platypus();
Console.WriteLine("hi");
}