What is the key structural difference between the Irish coat and the Heavy or American coat types recognized by breeders?

Answer

The Irish coat tends to be thinner and silkier, while the Heavy or American coat is often thicker and fuller.

Breeders distinguish between two primary coat varieties based on texture and density. The Irish coat is characterized as being thinner and possessing a silkier texture. In contrast, the Heavy or American coat is generally described as being thicker and fuller in comparison. Although some breeders champion the Irish style as the original working coat, both varieties share the fundamental requirement of demanding diligent daily maintenance to preserve texture and neatness, as they both lack an undercoat and are prone to matting.

What is the key structural difference between the Irish coat and the Heavy or American coat types recognized by breeders?
appearanceDogcharacteristicbreedwheaten terrier