Why this breed matters
The Chihuahua is the smallest dog breed in the world and possibly the most misunderstood. Named for the Mexican state where they were refined, these dogs have been companions for centuries. They're not trembling because they're scared — they have high metabolisms and poor temperature regulation. That attitude? Pure Napoleon complex combined with genuine breed temperament. They're feisty because they're supposed to be.
Ownership reality
Chihuahuas are the poster child for 'small dog syndrome' because most owners don't train them. They bite more people per capita than Pit Bulls — because owners let them get away with it. Properly socialized and trained, they're loyal, entertaining, and bond incredibly hard to their person. They're prone to hypoglycemia (especially puppies), don't tolerate cold, and can be difficult with strangers and other dogs. The long-lived breed means you're committing to 15+ years.
The verdict
Commit if
You want a small, loyal companion. You'll train them like a real dog. You want a long-lived breed. You're okay with a one-person dog.
Skip if
You have young children. You think small dogs don't need training. You want a dog that likes everyone. You live somewhere cold without indoor heating.
Temperament
- → Loyal to owner
- → Alert and territorial
- → Big personality, small body
- → Can be nervous or aggressive if not socialized
- → One-person dog tendency
Common health issues
- ⚠ Patellar luxation
- ⚠ Heart disease (patent ductus arteriosus)
- ⚠ Hypoglycemia
- ⚠ Hydrocephalus
- ⚠ Tracheal collapse
- ⚠ Dental disease
Sources
- AKC Breed Standard · 2026-02-04
Specifications
| Height | 5-8 inches |
| Weight | under 6 lbs |
| Lifespan | 14-16 years |
| Exercise | Low |
| Grooming | Low (smooth coat) to Moderate (long coat) |
| Trainability | Stubborn |
| Good with Kids | Varies |
| Apartment Friendly | Yes |
About Toy Group
Breeds bred specifically to be companions. These are the lap dogs, the portable pals, the dogs that have been keeping humans company in small spaces f...
View all Toy Group breeds →Similar breeds
More from Toy Group
Mini Poodle
Same brain as the Standard, smaller package. The Mini Poodle is arguably the most versatile small dog — smart enough for competition obedience, athlet...
Yorkie
The Yorkshire Terrier was a working class dog before they were a fashion accessory. Victorian mill workers in Yorkshire bred them to catch rats in tex...