The Chihuahua was bred in Mexico in North America.
The Chihuahua's first documents were found in Pyramids of Cholula about 1530, but it's likely older.
Pre-Columbian elites kept these sacred dogs as pets. Columbus may have brought them to Europe.
Chinese Crested genetics may have made Chihuahuas smaller.
Chihuahuas are the smallest dog breed. The Club recommends no more than 6 pounds for these small dogs, which measure 6 to 9 inches to the shoulder.
Coats are long or short. They need frequent walks and playtime despite their size.
Long-haired varieties need daily brushing. Smooth-coated Chihuahuas nevertheless need occasional brushing and wiping.
The oldest North American domesticated dog lived 9,400 years ago.
University of Maine researchers recovered bone fragments from one such dog in Texas.