Pelage refers to the fur, hair, or wool covering the body of mammals. It serves various functions, including insulation, protection, and camouflage. The texture and color of pelage can vary widely among species, adapting to their environments and lifestyles. Different types of pelage include underfur, which provides warmth, and guard hairs, which protect against moisture and wear. Seasonal changes can also affect pelage, as many animals, like arctic foxes, grow thicker fur in winter and shed it in spring to adapt to temperature changes.