Chihuahua (dog) The affected chihuahua will hold its leg flexed, and foot off the ground until the quadriceps muscle relaxes and lengthens, after which the animal feels no discomfort and continues with activity. Chihuahuas are also prone to some heart-related disorders, such as heart murmurs and pulmonic stenosis, a condition in which the blood outflow from the heart's right ventricle is obstructed at the pulmonic valve. Chihuahua (dog) The Chihuahua () is the smallest breed of dog and is named after the state of Chihuahua in Mexico. Chihuahuas come in a wide variety of colors, and two coat lengths. The Chihuahua's history
Breed type (dog) English Mastiff standard cautions, "Judges should also beware of putting a premium on showiness." "Breed type" usually takes into account the work the original dog type from which the breed was developed was bred to do. In order to counterbalance the overuse of appearance in awarding championships, some major registries and breed clubs have instituted performance events as part of the awards at conformation shows. Dog type, "breed type", dog breed, and purebred dog breed are at times all used interchangeably, but they all have distinct meanings. "Types of dogs" are varieties developed for a specific work; they may be