What dual function do the outer and undercoat layers of the Welsh Terrier serve?

Answer

Outer coat protects against harsh weather and dense undergrowth; undercoat provides necessary insulation.

The Welsh Terrier possesses a functional double coat made up of two distinct layers serving complementary purposes. The outer coat is characterized as being hard, dense, and wiry, and its primary role is physical defense, shielding the dog from inclement weather conditions and scraping through dense vegetation while working. Beneath this protective shell resides the undercoat, which is softer in texture, and its essential purpose is to provide thermal insulation, keeping the dog warm in colder environments. Maintaining this functional texture requires specific grooming techniques, with hand-stripping being the preferred method.

What dual function do the outer and undercoat layers of the Welsh Terrier serve?
appearanceDogmorphologyphysical characteristicWelsh Terrier