Chihuahuas come in virtually any color combination, from solid to marked or splashed, allowing for colors from solid black to solid white, spotted, sabled, or a variety of other colors and patterns. Colors and patterns can combine and affect each other, resulting in a very high degree of variation. Common colors are fawn, red, cream, chocolate, blue, and black. No color or pattern is considered more valuable than another.
Chihuahua breeders often use terms like Teacup, Pocket Size, Tiny Toy, Miniature or Standard to describe puppies. These terms are not recognized by the breed standards and are considered marketing gimmicks to inflate the value of puppies.Chihuahuas are commonly referred to as either Apple heads or Deer heads,the former having short noses and rounded heads similar to that of an apple; the latter having longer noses and more elongated heads.A Chihuahua must be chosen with care, as the temperament of its owner can make a difference in the temperament of the pup. Ill tempered Chihuahuas can be easily provoked to attack, and are therefore generally unsuitable for homes with small children.The breed tends to be fiercely loyal to one particular owner and in some cases may become over protective of the person, especially around other people or animals.They do not always get along with other breeds, and tend to have a "clannish" nature, often preferring the companionship of other Chihuahuas over other dogs. These traits generally make them unsuitable for households with children that are not patient and calm. Chihuahuas love their dens and will often burrow themselves in pillows, clothes hampers, and blankets. They are often found under the covers or at the bottom of the bed, deep in the dark and safety of what they believe is their den.
The merle coat pattern, which appears mottled, is not traditionally considered part of the breed standard. In May 2007, The Kennel Club decided not to register puppies with this coloration due to the health risks associated with the responsible gene, and in December of that year formally amended the Breed Standard to disqualify merle dogs. The Fédération Cynologique Internationale, which represents the major kennel club of 84 countries, also disqualified Merle. Other countries' kennel clubs, including Canada, Australia, New Zealand, and Germany, have also disqualified Merle. However, in May 2008, the Chihuahua Club of America voted that merles would not be disqualified in the United States, and would be fully registrable and able to compete in American Kennel Club (AKC) events. Opponents of merle recognition suspect the coloration came about by modern cross-breeding with other dogs, and not via natural genetic drift.
Chihuahuas are also known for a genetic condition called 'luxating Patella,' a genetic condition that can occur in all dogs. In some dogs, the ridges forming the patellar groove are not shaped correctly and a shallow groove is created. In a dog with shallow grooves, the patella will luxate or slip out of place, sideways. It causes the leg to 'lock up' and will force the chihuahua to hold its foot off the ground. When the patella luxates from the groove of the femur, it usually cannot return to its normal position until the quadriceps muscle relaxes and increases in length, explaining why the affected dog may be forced to hold his leg up for a few minutes or so after the initial displacement. While the muscles are contracted and the patella is luxated from its correct position, the joint is held in the flexed or bent position. The knee cap sliding across the femur can cause some pain due to the bony ridges of the femur. Once out of position, 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.
Chihuahuas, along with other miniature dogs such as Chinese Cresteds, are prone to physical deformities, especially in old age; several chihuahuas and cross-bred chihuahua/Chinese crested mixes have rated highly in the World's Ugliest Dog Contest, including a purebred chihuahua named Princess Abby that won the 2010 contest and a crossbreed named Yoda that won the 2011 contest.
SOME CHIHUAHUA BREEDS.
|TEACUP CHIHUAHUA .|
Long Haired Tan Chihuahua.
Short Haired Chihuahua.
|SHORT HAIRED CHIHUAHUA.|
|LONG HAIRED CHIHUAHUA PUP.|