Hair Vs Fur Dogs. Dog hair is not able to control outer temperatures, while fur has denser coats that provide warmth and control outer temperatures. Scientifically, hair and fur are made of exactly the same material, a protein called keratin.
Hair sheds less frequently than fur. The term “hair” and “fur” are synonymous when it comes to describing a dogs coat, but there is a difference, and pugs have fur. What hair does do is contain dander better than fur.