The smooth-coated Chihuahua has a smooth, shiny coat that fits close to the body with a ruff of thick, longer hair on the neck. The hair on the head and ears is thinner, and the tail is furry. The long-coated Chihuahua has a soft coat that's flat or slightly curly.

Chihuahua Dog Personality The Chihuahua temperament is typically alert, lively, confident, courageous and self-reliant. Chihuahua puppies have big, confident personalities and are mostly indoor dogs. Some owners describe Chihuahuas as having an almost terrier-like temperament.

Chihuahuas are prone to issues that affect small dogs, such as hypoglycemia, luxating patella, tracheal collapse, and dental problems. The Chihuahua is the smallest among the AKC registered breeds, weighing around two to six pounds. Despite their size, chihuahuas are full of life and energy.