using System;

public class Program

{

    public static void Main()

    {

        int dog = 1;

        if (dog == 1)

        Console.WriteLine("Dog: Mammals");

        int snake = 1;

        if (snake == 1)

        Console.WriteLine("Snake: Reptile");

        int cat = 1;

        if (cat == 1)

        Console.WriteLine("Cat: Unknown");

    }

}