A miniature Chihuahua is a smaller Chihuahua dog. The only difference between a miniature and a regular Chihuahua is its size, and the American Kennel Club does not recognize it as an official breed.
Miniature Chihuahuas are also known as teacup Chihuahuas. They are not a separate breed of dog; they are simply small Chihuahuas. Some dogs marketed as teacup Chihuahuas may be runts of the litter, while others come from litters of other small dogs. Potential owners can ensure they get a true miniature Chihuahua and not a runt by looking at the parents. If the parent dogs are also small, it is likely that the offspring will grow up to be small as well.
Miniature Chihuahuas are usually described as Chihuahuas that weigh less than 3.5 pounds. In comparison, the average adult Chihuahua weighs 6 pounds. Other than that, they are not much different from regular Chihuahuas. However, due to their small stature, they can require special care. Low blood sugar is a common issue in smaller Chihuahuas, so they may require regular feeding. Their low body mass can also cause them to be more sensitive to the cold, so owners should be sure to cover them up with sweaters in cold weather. In addition, their small size makes them more delicate than other dogs, so owners should be gentle with them.