puff. 1  a short, quick blast, as of wind or breath. 2  an abrupt emission of air, smoke, vapor, etc. 3  an act of inhaling and exhaling, as on a cigarette or pipe; whiff. 4  the sound of an abrupt emission of air, vapor, etc. 5  a small quantity of vapor, smoke, etc., emitted at one blast. 6  an inflated or distended part of a thing; swelling; protuberance.
The Shetland Sheepdog is related to the Rough Collie, both dogs descended from Border Collies that inhabited Scotland. The Border Collies were brought to the Scottish island of Shetland and crossed with the Icelandic Yakkin, a small island dog which is now extinct. By 1700, the Sheltie was completely developed.
Over many decades the Welsh Sheepdog has been widely replaced in Wales for working sheep by the Border Collie, but in more recent years efforts have been made to maintain the indigenous Welsh Sheepdog as a distinct type.ike other types of working dog, Welsh Sheepdogs are normally bred for their herding abilities rather than appearance, and so they are generally somewhat variable in build, colour and size.