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
Giant dog breed Giant dog breed A giant dog breed has no universal height or weight classification, although some groups define "giant breeds" as those heavier than . Giant breeds grow rapidly, but take longer to mature into their full adult sizes than smaller dogs. Many giant breeds are mature, soft and relaxed dogs as adults and require less exercise than most smaller dogs, so they can make better pets for small living arrangements, such as apartments. Because they are larger animals, they are less likely to be intimidated by other people and thus are much more adaptable to meeting friends, family members,