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) agree with that selection, the breed will change over time. Each element of the standard is considered both independently and part of the whole of "breed type". In writing about the Borzoi, Jon Titus Steel says, "The neck is a key element of breed type", affecting a dog's outline, balance, movement, and function. In conformation judging, judges compare the dog to the ideal "breed type" represented in the standard. Since breed standards leave room for interpretation, conformation show judging is highly subjective, and individual judges will place more or less emphasis on the various elements of "breed type". In addition,