The whitetail’s keen sense of hearing is crucial in helping to detect danger. Deer can easily pick up a faint sound (i.e. rustling leaves) and in a split-second determine the approximate distance to the noise. Deer can hear at higher frequencies than humans do, although their range is probably not as high as a dog’s.
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A deer’s ears, which contain many complex muscles, move freely. A deer rotates it ears in all directions to home in on sounds. Upon hearing a strange noise, a deer focuses both ears in that direction. The deer stops moving and waits to hear and decipher the sound again. If other deer are around, an alert animal’s ear becomes a focal point. With a simple flick of an ear a spooky deer can warn a herd of approaching danger.