I don’t know if they appreciate it, but it does affect them. There was an experiment with rats where they were supposed to go through a maze with music playing. First, they tested out classical music, and rats could find their way out of it with no problem, and faster than if there were no music. Then they played hardcore rap music, and the rats went crazy, and were not able to find their way out of it. They repeated this same experiment several times and always came up with similar results. The rats responded better to classical music than rap. As to whether they appreciate it, no one knows. But it does affect them.