They say dogs can hear four times better than you can. I believe this. That is why they know when you are coming home. They hear your vehicle before anyone else does. They also turn their ears in the direction of sounds which we cannot do. Here is a little experiment you can do. Turn your TV down low so you can hardly hear it. Now cup you hands around your ears and point the palm end toward the TV. Did it get easier to hear? It should have.