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The prepuce is an invagination of abdominal skin that contains the free portion of the non‐erect penis and covers the body of the penis behind the glans. The preputial orifice is located caudal to the umbilicus and is surrounded by a tuft of long hair that serves to divert urine away from the skin surrounding the orifice following micturition.

The penile attachment of this invagination of skin occurs caudal to the glans penis and in the non‐aroused state penile retraction results in the presence of a fornix in the preputial cavity adjacent to the free portion of the penis. When erect, the free portion of the penis extends beyond the preputial orifice and the hairless reflection of skin within the preputial cavity extends with the penis and covers the shaft. The subcutaneous tissues of the prepuce must be freely moveable to allow extension and retraction of the penis and the preputial reflection. The specialized connective surrounding the tunica albuginea are referred to as the elastic layers of the prepuce.