They are generally of a brownish color and not large, but some of them are yellow and with ears erect.
The so-called dogs of Chihuahua, which command quite a price among dog-fanciers, are found only in the capital of the state.

They are small pet dogs and very timid, with large ears and prominent eyes.

I understand that the yellowish-brown are considered the purest breed, but they are found in many different colors, from snow-white and black-and-white to dark-brown.

They are said to have a small cavity on the top of the head, though according to some authorities this is not an unfailing mark of the breed, which seems to be indigenous.

The illiterate Mexican, in his tendency to connect everything good with Montezuma, thinks that the pure dogs of Chihuahua are descendants of those which were left behind by that regent near Casas Grandes at the time when he started south, which afterward became wild and degenerated into the prairie-dogs of to-day.
Another dog indigenous to Mexico is the hairless dog, also a pet, found throughout the republic among the Mexicans.