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.
The collie is a distinctive type of herding dog, including many related landraces and standardised breeds. The type originated in Scotland and Northern England. The collie is a medium-sized, fairly lightly built dog, with a pointed snout. Many types have a distinctive white pattern over the shoulders. Collies are very active and agile, and most types of collies have a very strong herding instinct.