HARK! WHO GOES THERE?

A puppy's ears are sealed at birth and they are unable to hear for the first couple weeks of life.  During this period, they rely on scent and vibrations to guide them.  Once their hearing has developed, they can hear about 4 times the distance of a person with normal hearing.  They can also hear much higher pitched sounds (range 67-45,000 Hz) than humans (range 64-23,000 Hz) can.  Their ear flap, or pinna, has more than 20 muscles allowing them 180 degrees of movement helping them to capture sounds.  Not to mention the many adorable ways a puppy holds his ears to express himself.