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
Laika (dog breed) Laika (dog breed) Laika () refers to a type of hunting dog of Northern Russia and Russian Siberia, and is a generic name for several breeds. Fédération Cynologique Internationale uses the word "Laika" in the names of three standard breeds: Russian European Laika (FCI standard No. 304), West Siberian Laika (FCI 306), and East Siberian Laika (FCI 305), which had been bred from the aboriginal dogs of northern Russia and Siberia. The Karelo-Finnish Laika, not listed in the FCI nomenclature, is also a Russian breed, with the first standard published in Leningrad in 1936. It is a close relative of