private void addReptile()
{
Reptile aReptile = new Reptile();
Console.Write("Enter new Reptile's name: ");
string name = Console.ReadLine();
aReptile.Name = name;
Reptiles.Add(aReptile);
throw new System.NotImplementedException();
}
void addReptile(Reptile reptile)
{
aReptile = reptile;
}