Short Haired

Guinea Pig

The short coated cavy - often called the American or English- has consistently short, glossy hair without a part. This breed of cavy most resembles the Guinea pig's relatives and ancestors in the Cavia genus. In shows, short-haired Guinea pigs are shown by their color variety - self, dalmatian, Himalayan, etc. This designation does not have "American" or "English" appended to it, but applies only to short-haired animals.

http://en.wikipedia.org/wiki/List_of_guinea_pig_breeds