Histopathologically, the mass was diagnosed as preputial gland adenoma. Spontaneous preputial gland adenomas are extremely rare in all animals. Moreover, reports of tumors in nutrias have been limited to adenocarcinomas of , as well as subcutaneous fibromas. Here, we describe preputial gland adenoma in a wild nutria. | Preputial gland adenoma in a wild nutria Myocastor coypus A case report