According to the AKC

Dog Breed: Chihuahua

Breed Group: Toy dog

Weight: not exceeding 6 pounds

Height: 5-8 inches

Lifespan: 14-16 years

Adaptability: Pretty adaptable

Friendliness: Pretty friendly with the family, less so with strangers and children

Activity Level: Pretty energetic

Ability to Train: Trainable

Thoughts: I’ve never been a huge fan of Chihuahuas, which is rich considering I’ve never met one. At least I finally learned how to spell Chihuahua.

For more info + the source I used: https://www.akc.org/dog-breeds/chihuahua/