Preputial gland

Preputial glands are exocrine glands in the prepuce in front of the penis. They occur in many mammals, including canids, mice, ferrets, rhinoceroses, and even-toed ungulates and produce pheromones. The preputial glands of female animals are sometimes called clitoral glands.

Male canids scent-mark their territories with urine and preputial gland secretions. The preputial glands of male musk deer produce strong-smelling deer musk which is of economic importance, as it is used in perfumes.