Sound In Our Ears

Ever wonder if animals can even hear us talking very well? Well, frogs for example can actually hear better than us humans. The Chinese frog can actually tune their ears like a radio dial. They can even block sounds within certain ranges. When the frogs close their Eustachian tubes they hear high frequencies. The Eustachian tubes are two narrow tubes that connect the mouth cavity to the left and right ear. When these tubes are closed, their sensitivity to low frequencies increase. I believe they have so well because they life in such a noisy environment. These are just things I have found about animals, but you can always fine more information.