Cats have considerably better hearing and sound localisation than humans. For adult cats, the upper hearing limit is around 50,000 Hz, whilst young cats even hear sounds up to 100,000 Hz. In contrast, we just about manage to hear sounds of 20,000 Hz. This figure decreases rapidly amongst old people, which becomes very evident when they can no longer hear high frequency sounds such as dog whistles or bat calls, for instance. Likewise, dogs fall behind cats with a hearing range of up to 40,000 Hz.