Posted by: Linda Trunell | October 18, 2013

Friday Fact – Canine Hearing

We know that dogs have a much better sense of smell than humans and they can also hear better. They hear more than four times better than a human and hear a wider range of frequencies – 40 Hz to 60,000 Hz while humans hear 20 Hz to 20,000 Hz. That’s why they hear dog whistles and we can’t.

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An advantage that dogs have over humans is that they’re able to change the position of their outer ears. First, when dogs hear a noise, they move their ears towards the sound in order to maximize the reception.  They have at least 18 muscles in their ear that allows the ear to tilt and rotate so the sound waves are more easily directed into the ear. The shape of a dogs’ ear canal and the shape of its outer ear help increase the sound, and this helps them to identify exactly where the sound is coming from.


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