Underfur

/ˌʌndəfˈɜː/

/ˌʌndɚfˈɜː/

Underfur

the dense, soft, and insulating layer of fur found beneath the outer or guard hairs of an animal's coat, providing warmth and protection

synonyms : undercoat

Examples

1. An adult muskox can shed up to 3.6 kilograms of underfur when the weather warms up in the spring.

2. Another layer of dense underfur close to their skin is spaced just right, creating little pockets of air that trap heat close to the bear’s body.

3. These layers are positioned around a centimeter apart, trapping a layer of air between them and minimizing heat loss like a polar bear’s underfur.

4. Well, I would say this fur is almost like underfur, it's not very wirey, it's very soft.