Chihuahua is the smallest of the AKC registered breeds, weighing in at two-to-six pounds. No height is given in the standard, but most Chihuahuas are six-to-eight inches tall. As with many breeds, the body is slightly longer than it is tall. With its big eyes, big ears, and bigger-than-life attitude, the Chihuahua is the epitome of cocky canine in a petite package