Chihuahuas are small dogs with a short and pointed muzzle and a pink to black nose, which varies according to the coat color. The eyes of a chihuahua are not protruding, and can come in many colors. Chihuahuas have large ears, in comparison to their head's size. According to the American Kennel Club, a chihuahua should not weigh more than 6 lbs..
Chihuahua is a toy breed, along with the poodle, Pomeranian, pug and many others.
Toy dogs are popular city pets, due to their small size. According to the American Kennel Club, all chihuahuas are considered toy dogs. However, as size can vary from one dog to the other even within the same breed, breeders can cross-breeding smaller than average individuals to keep the trait in the puppies, which are advertised in the pet market as tea cup and miniature chihuahuas.
Long-coat chihuahuas have wavy or flat furs with a soft texture. They have long tails, which look like plumes and feathering fur on the ears, hindquarters, feet and legs. Long -coat chihuahuas commonly have a ruff on the neck. They can show any color, but coats with black and white patterns, also called Merle pattern, are rare.
The only trait that differentiates smooth-coat chihuahuas from long-coat chihuahuas is related to the fur. Although it can also show a neck ruff, the smooth-coat chihuahua has a glossy and short coat. In smooth-coats and long-coats alike, the tail is set high and furry. Smooth-coat chihuahuas require little grooming, and tend to shed less hair than long-coat chihuahuas.