My dog definitely bites his nails, I often hear a quite loud clicking sounds.
I disliked it very much the first and only time I clipped his nails, horrible. I was continuously afraid to cut too much. In that sense it's great. I just have to be extra careful for him not to do anything too enthusiastically on hard surfaces.
"Death is nothing to us, since when we are, death has not come, and when death has come, we are not."