More than one type of canine hair can grow from the same hair follicle.

• A. True
• B. False
• C. Only in double-coated breeds
• D. Never

Answer: (A)

In dogs, hair grows from follicular units that can contain more than one hair strand. A single unit often has one primary follicle that yields a guard hair and several secondary follicles that produce undercoat hairs. Because these hairs share the same region of the skin, more than one type of hair can grow from the same follicle area. This is especially noticeable in double-coated breeds, where the coarse outer guard hairs and the soft inner undercoat come from the same follicular unit. So the statement is true.