public void CreateaCrocodile()
{
Crocodile crocodile = new Crocodile();
crocodile.ID = count;
Console.WriteLine("Name of Crocodile: ");
crocodile.Name = Console.ReadLine();
Console.WriteLine("Age of Crocodile: ");
crocodile.Age = Int32.Parse(Console.ReadLine());
animal.Add(count);
animal.Add(crocodile);
count++;
}