Those are her take off like an airplane ears,
At my granddaughter's suggestion, my daughter sent Pippin, our old cat, a letter. My granddaughter waited until Pippin showed up, (from hunting bunnies, or sleeping--but I sure wish she would go after the mice!!) to open and read the letter to her. Pippin sat and listened--she perked her ears when the letter was translated into cat language--meow, meow, meow, meow!