I have discovered a mushroom growing in my friend's bathroom! He is disgusted by it but I actually think it's kind of interesting (but yeah, also pretty gross). I first noticed it about a month ago, and at the request of my friend I yanked it out of the floor and poured a ton of bleach in the area. As of this morning, it's back! In the exact same spot! Coming out of the tiny crack in the floor between the tiles and the base of the toilet. I am including some photos here (one of the mushroom from last month, and one of the new mushroom today), if anyone could let me know what kind of mushroom this is it would be much appreciated, especially if it is dangerous in some way. Also, any tips on how to permanently get rid of it would be great. Thanks!