Cutaneous fibromas, more commonly called deer warts by hunters, are occasionally observed on harvested deer. The fibromas are pealing, especially when they appear in large numbers. "Grotesque" is a common description of these harmless skin blemishes. The fibromas are found in deer herds from a majority of states in the nation. As a result, they are considered to exist in the entirety of the white-tailed deer range.

Fibromas are caused by a virus which is thought to be transmitted by various biting insects. However, another possible means of transmission of the viral agent is direct contact through any assortment of contaminated objects which may scratch or penetrate the skin of the deer.