Weight, Height & Life Expectancy Most Chihuahuas are around 15-23 cm in height, and usually weigh-in at around 0.5-3 kg. You can expect to enjoy their company for approximately 13-14 years. Personality Chihuahuas are hardy, bold and full of personality despite their tiny stature. They are very intelligent and learn commands easily. Early training and consistent expectations of follow-thru on commands are essential in curbing their wilfulness. Chihuahuas are also very loving and affectionate, but without proper early socialization, they can become overly attached and develop unhealthy jealousies of other people and/or animals. Be patient when housebreaking a Chihuahua, as this small dog needs time to adjust to this new behaviour. Grooming and Exercise Chihuahuas are quite sensitive to cold and require extra covering like a sweater or coat to keep them warm. They need regular eye checks, and their teeth need to be examined for tartar build-up. However, only ...