Chihuahuas are among the oldest – and most popular – dog breeds in the world.  Currently, the Chihuahua is the 30th most popular dog in the United States according the American Kennel Club, but is a Chihuahua right for you? Temperament Despite being a toy-sized dog, Chihuahuas have a lot of personality.  According to the AKC breed description, they should be “sassy, charming, and graceful,” with emphasis on sassy.  Indeed, Chihuahuas can become aggressive and territorial when not properly socialized.  In addition, Chihuahuas are extremely loyal dogs and have a tendency to become protective over a favorite human. Size, Coloring, Upkeep Male and female Chihuahuas should weigh 4 – 6 lbs and stand 6 – 10’’ tall at the shoulder.  There are two different coat lengths:  short and long.  Contrary to popular belief, long-haired Chihuahuas are lower maintenance than their short-coat counterparts, as they shed less frequently.  There are nine...