AnimalType

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace AnimalType
{
    class Program
    {
        static void Main(string[] args)
        {
            string animal = (Console.ReadLine());

            switch (animal)
            {
                case 1:
                    animal = "dog";
                    Console.WriteLine("mammal");
                    break;

                case 2:
                    animal = "crocodile";
                    Console.WriteLine("reptile");
                    break;

                case 3:
                    animal = "tortoise";
                    Console.WriteLine("reptile");
                    break;

                case 4:
                    animal = "snake";
                    Console.WriteLine("reptile");
                    break;
            }

            if (animal != "dog" && animal != "crocodile" && animal != "tortoise" && animal != "snake")
            { Console.WriteLine("unknown"); }
        }
    }
}