I have a big fat black cat who's very lazy. When I play flute especially in the middle to high register he'll give a scratchy small meow as if to say please stop but I'm to tired to get up. Sometimes if my cats are sleeping and I play a high note they'll wake up and the ears will go all over the place and run away. Most of them are used to it by now. However when I had oboe that scared everyone of them and they'd run out of the room. I used to chase them with it and drive them crazy. I know bad!