Preputial gland
Preputial glands are exocrine glands that are located in the folds of skin front of the genitals of some mammals (including mice) and produce pheromones. The preputial glands of female animals are sometimes called clitoral glands.
The preputial glands of male musk deer produce strong-smelling deer musk which is of economic importance, as it is used in perfumes.