These Canine Hearing Facts?

High frequency. Dogs can hear significantly higher frequency sounds than humans (although cats take the prize in that department). In the dead of night, for example, dogs can hear the high-frequency crystal resonator inside your digital alarm clock.

Superior muscle control. Our ears can barely twitch. Dog ears move independently of each other and are operated by 18 muscles that allow them to tilt, rotate, and stand straight up.

Shaped for sound. Unlike our super-short ear canals, dogs have long, L-shaped canals. This makes a dog’s ear an instrument finely tuned to interpret sound. It also makes it difficult to clean and as such prone to infections and parasites.