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
Northern New Mexico government generally divides New Mexico into four regions: Eastern, Central, Southwestern and Northern New Mexico. For those purposes Northern includes the Four Corners area together with the cultural area, but excludes Sandoval County. The Northwest Region is frequently referred to as the "Four-Corners Region". For tourists, New Mexico is divided into six regions, with Northern New Mexico being divided into North Central Region, Northeast Region and Northwest Region. Sandoval County is part of the Central Region to the south. Under that schema, the North Central Region includes the core part of cultural Northern New Mexico. The Northern Rio Grande National