What is the role of the dog’s beard

The root of the dog’s whiskers are distributed with a large number of nerve endings, which makes the dog more sensitive to judge objects; the left and right sides of the dog’s whiskers also have the role of measuring the width of the body, they can judge through their whiskers to determine whether they can cross narrow places; whiskers can help them maintain their balance, which is similar to the function of the dog’s tail. The dog’s whiskers are a special hair, with biological body sensory role, it can feel the external stimuli, the surrounding environment changes, including the role of vision assistance, equivalent to a detector, can always feedback the dog a variety of information to remind the dog around whether there are obstacles or the presence of prey.