My dogs love it! My violins were stolen in the 1980’s and I hadn’t played for several years before that. I inherited a piano and was able to learn piano and found that I wanted to play violin again. When I got my violin and tuned it, the first thing I did was practice bowing on open strings. My dog began singing in tune with the sound! Not howling, something more like a cross between moaning and humming. I knew they liked my piano playing, but this surprised me, especially being the first time I’d played in almost 48 years. Now he sings when I’m playing in tune with my fingering. The other one comes running to be nearby when I play, too. This was such an encouragement that I was still able to bow well enough to produce a good sound after all those years.