Dogs come in all different color, shapes and sizes. From big dogs such as Great Danes, muscular PitBulls to the smallest Chihuahua. All of this dogs share similar and common traits such as their fluffy hairs. But there are some breeds which evolved without this fluffy coat. See this hairless dogs and how they compare to a Sphinx.
1. American Hairless Terrier
The American Hairless Terrier (AHT) is identical to the medium-sized Rat Terrier, from which he is directly descended. The American Hairless is a well-muscled dog with a deep chest, strong shoulders, solid neck and powerful legs.