Nose-it all: How dogs smell

Your dog has an incredible nose.  The average human has around five million hair cells up their nose and your dog has approximately 300 million.  The average dog has such acutely sensitive scenting ability that it can identify smells so diluted that even scientific instruments cannot measure them.  To study this, John Paul Scott and John L.Fuller placed untrained beagles, Fox terriers, and Scottie dogs in a one-acre field and released a mouse.  It took the beagles around a minute to locate the mouse and the terriers fifteen minutes.  The Scotties never found the mouse.

Find out more about how your dog ‘sees’ the world through his sense of smell with this great animation from TED-Ed, based on insights from Alexandra Horowitz’s book Inside of a Dog: What Dogs See, Smell, and Know.

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