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 club (dog) the preservation and protection" of the club's breed. Each club defines for itself what exactly the club will do for the breed, depending on the use of the particular breed that is advocated by the breed club. Breed clubs write the standard for their breed, and independent breed clubs maintain their breed's stud book (other breed clubs are affiliated with a national kennel club, which maintains the stud books of a great many breeds in a central location.) Breed clubs provide information to the public about their breed. Club members agree to a code of ethics overseen by the club