Normally if Popsie feels he needs to lap up the water in the tub and there's none in there it's no big deal. He'll just go drink from his water bowl. Twice now he's begged me to put water in the tub so at first I just refreshed the water in his bowl because I'd rather him drink from there than the tub. Well he wouldn't have it and I don't want him to be thirsty so I stop up the drain and let a little water collect so he can drink.
I'd probably sever a limb if he wanted me too.