We are occasionally asked if, when using one of our cat drinking fountains containing a Cat Tap, can the Cat Tap cut a cat’s tongue? The answer is of course, of course not, or we wouldn’t offer them. In fact, if you were to take any one of our Cat Taps and drag it with some force across your wrist, it wouldn’t cut you. We grind, buff and polish our Cat Taps so they have a smooth, rounded edges.They are comfortable. And this brings up an interesting subject about cats’ tongues. Here is an article that discusses this.