Why don’t animals need a barber? Because God designed them to shed in a specific manner.
7 The righteous lead blameless lives; blessed are their children after them.
From, “A Pocket Guide to the Human Body,” page 69-70.
While many of us make periodic trips to the barber, most nonhuman mammals always appear in perfect trim without a barber. The reason for this is that hair grows in a cyclic manner. A relatively long period of growth (that varies with the type and location of the hair) is followed by a short period of rest after which the hair is released from the follicle, and a new growth cycle begins forming a new hair. Thus the length of the growth cycle determines the length of the hair.
If hair grew longer and longer without being released from the follicle, it would be disastrous for the mammals that don’t visit a barber. Can you imagine, for example, a squirrel dashing through the branches, dragging a couple feet of hair? [it would wind up like Absalom] The Lord thinks of everything!
Hair grows about .3mm per day (about three tenths the thickness of a dime). Within a year, our scalp and beard can produce nearly five inches. By comparison, the longest hairs on our arm have a growth cycle of less than two months. The growth cycle of scalp and beard hairs varies from individual to individual but can be several years. A Vietnamese man was reported to have the longest scalp hair, which measured over 20 ft. long. According to a BBC News report in June 2004, he claimed not to have cut his hair in more than 30 years.
The question is how the hair follicles know what the length of growth is for that part of the body. The answer is simple: God designed our DNA in such a manner that best suits each species. To say that God’s design is the work of evolution is to be ungrateful and unappreciative of His handiwork. Indeed, “We are God’s handiwork (His masterpiece), created in Christ Jesus to do good works, which God prepared [in our DNA] in advance for us to do” Ephesians 2:10.
Abba, You have designed us to praise You with our mouths, listen to You with our ears, and serve You with our hands. May we be diligent in fulfilling our life’s purpose. Amen.
PS. The first hair follicles begin to form by the third month in the womb. The follicles produce lanugo hair. These rather long, silky hairs are usually shed in the womb a few weeks prior to birth and are replaced with vellus hairs, which grow out of the same hair follicles. A premature baby may appear surprisingly hairy because of unshed lanugo hair.