Chihuahua

By: Giavanni Maude Silver

The chihuahua are the smallest breed of dog's in the world. Chihuahua has one of the largest color of combination of any breed. But a few indigenous breeds in North America have a purer pedigree — at least one has genetic roots in the continent that stretch back 1,000 years or more, according to a new study. These modern North American breeds — including that current urban darling, the Chihuahua — descended from the continent's original canine inhabitants and have not mixed much with European breeds.Maternal ancestry, of course, can't tell the whole story, Savolainen says, and mitochondria trace the genetic lineage only through mothers.

The ancestors to the Chihuahua nearly became extinct during the 1500s, when the Aztec Empire was decimated by Hernán Cortés and the Spanish colonizers. In 1850, three small dogs -- now thought to be modern versions of the Chihuahua -- were discovered in the Mexican state of Chihuahua, from which breed gets its name. Border states within the United States, such as Texas, Arizona and New Mexico, soon began to see a massive import of the dog breed. However, it wasn't until the Rhumba King, Xavier Cugat, began appearing in films carrying a Chihuahua dog in the early 1900s, that the breed gained its celebrity. Today, it has emerged as one of the most popular breeds in the United States.

This is how chihuahua's used to look now they are smaller and come in tea cups sizes.

http://www.petmd.com/dog/breeds/c_dg_chihuahua

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