I have NO idea how....but all I know it's gone! The carpet had a small amount of blood (where is Ondrea when I need her) and followed a trail to her dog bed. Wow. That's a 'new to me' situation. As a child I lost a toe nail...it hurt A Lot! Well, I flipped it upwards, that's what hurt. Then much later, while bouncing on an old inner tube, my foot was underneath, and there it went. Flew right off. Anyway, Zoe' is fine, sleeping in her favorite evening spot, with 'dad'. I will keep a close eye on it. I'm sure she'll be fine. Poor baby.