Above) An 1876 portrait of a Xolo dog named Me Too. Even to this day, the Xolo or Mexican Hairless is confused in the public mind with the chihuahua, though they are by and large distinct breeds. The toy xolo, however, is undoubtedly crossed with the chihuahua.

Below) An 1890 engraving of Me Too the toy xolo dog who belonged to Mrs. H. T. Foote. The xolo has three sizes, standard, midsized, and toy. The toy tends to be slimmer with perkier ears showing the chihuahua in its heritage.