Pugs are such an interesting breed of dog, super niche.
yea they can be pretty cool.
They are really easy to discern from their distinctive features.
yep very scrunched up.
Pug
The pug is a breed of dog with physically distinctive features of a wrinkly, short-muzzled face, and curled tail. The breed has a fine, glossy coat that comes in a variety of colours, most often fawn or black, and a compact square body with well-developed muscles.
Pugs were brought from China to Europe in the sixteenth century and were popularized in Western Europe by the House of Orange of the Netherlands, and the House of Stuart. In the United Kingdom, in the nineteenth
clubs is not performed. 
Since the teacup dog is not an official or regulated breed category, it is very easy for breeders to mislead uninformed buyers. Breeders can easily market a regular dog as a teacup dog simply by lying about the puppy's age. Teacup dogs are also often the runts of a litter, which means that while they may be unusually small puppies, there is no guarantee that they will not grow to become regular-sized dogs for their breed.
See also.
- Companion dog