Chihuahuas take their name from the Mexican state of Chihuahua and are among the smallest dogs in the world, usually 3 to 9 pounds as adults. They have an apple-shaped head, large upright ears and a smooth or long coat in nearly any color. Pet Chihuahuas often weigh more than the show standard, and many live 12 to 16 years, so adopting one is a long commitment.
Many Chihuahuas are devoted to one or two people, alert and bold, and they may bark at visitors or hang back with strangers. Dogs vary, though, and plenty are relaxed lap companions. A small footprint helps in a rental-heavy town like San Luis Obispo, but barking and the need for gentle handling deserve thought. Chihuahuas and Chihuahua mixes are among the most common small dogs in shelters, in all ages and personalities.