Subpelo

Subpelo, or underfur, is the soft, dense layer of hair located beneath the outer guard hairs in the pelage of many mammals. It forms part of the animal’s double coat and is typically composed of fine fibers that lie closer to the skin than the longer, stiffer guard hairs.

The primary function of the subpelo is insulation. By trapping air close to the body, it helps reduce heat loss in cold conditions and can contribute to moisture management when combined with the outer coat. In species with seasonal molts, the underfur often thickens during winter and is shed in warmer seasons, a process that helps adapt to changing temperatures.

Subpelo is found in a wide range of mammals, including dogs, cats, bears, foxes, and various rodent and fur-bearing species. In animals with a double coat, the subpelo is usually more prominent, while some single-coat breeds have little or no distinct underfur. The exact density and length of the underfur vary by species, breed, and climate.

Care and management of the underfur are important in domestic animals. Regular brushing helps remove loose underfur, reducing matting and shedding, and supports skin health. Excessive shedding or pockmarks in the underfur can indicate health issues and may warrant veterinary attention.

See also: pelage, guard hairs, double coat, molt.