ChihuahuaVSShih Tzu

The Chihuahua is known for being sassy, charming, graceful, while the Shih Tzu is typically described as affectionate, outgoing, happy. These distinct personality traits mean each breed offers a different kind of companionship.

Both breeds share a similar playfulness level at 4/5, so you can expect comparable levels of fun and games from either one.

Noise-wise, the Chihuahua is more vocal with a barking level of 5/5, while the Shih Tzu is quieter at 3/5. If you prefer a calmer household, the Shih Tzu may be the better choice.

The Chihuahua is a small breed standing 15–23 cm (6–9 in) tall and weighing 1–3 kg (2–7 lbs). In comparison, the Shih Tzu is a small breed at 20–28 cm (8–11 in) and 4–7 kg (9–15 lbs).

The Shih Tzu is somewhat larger, though the difference isn't dramatic. Both breeds are manageable for most owners, but the size gap does affect food portions and space requirements.

The Chihuahua has a short coat available in fawn, black, white, chocolate, cream, blue, while the Shih Tzu sports a long coat in black, white, gold, brindle, liver. Coat type significantly impacts grooming needs and shedding, which we cover below.

The Chihuahua has moderate energy (3/5) with low exercise needs (2/5). The Shih Tzu has low energy (2/5) and low exercise needs (2/5).

Both breeds have similar exercise requirements, so your daily activity routine won't change much regardless of which you choose. Plan for regular walks and play sessions to keep either breed content.

When it comes to shedding, the Chihuahua drops more fur with a shedding level of 2/5, while the Shih Tzu is lighter at 1/5. If pet hair on furniture is a concern, the Shih Tzu will be easier to live with.

Grooming-wise, the Shih Tzu needs more upkeep (5/5) than the Chihuahua (1/5). The Shih Tzu's long coat demands regular professional grooming to stay in top shape.

Annual grooming costs average around $100 for the Chihuahua and $500 for the Shih Tzu. Factor this into your budget when deciding between the two.

The Chihuahua has a lifespan of 14–18 years, while the Shih Tzu lives 10–16 years. The Chihuahua tends to live longer on average.

Both breeds score 3/5 for health robustness, meaning they share similar overall health profiles.

Common health issues for the Chihuahua include patellar luxation, heart disease, hydrocephalus, hypoglycemia. The Shih Tzu is prone to brachycephalic syndrome, patellar luxation, hip dysplasia, eye problems. Regular vet checkups and health screenings are essential for both breeds.

Annual vet costs average $450 for the Chihuahua and $450 for the Shih Tzu. Pet insurance is worth considering for either breed.

Training comes more naturally with the Shih Tzu, which scores 3/5 for trainability. The Chihuahua's score of 2/5 means you may need more patience and consistency to see results.

Both breeds match in intelligence at 3/5, so expect similar learning speeds and mental stimulation needs from either choice.

Regardless of which breed you choose, early socialization and consistent positive reinforcement training are key to raising a well-behaved dog. Puppy classes are a great investment for either breed.

Both the Chihuahua and Shih Tzu score 3/5 for intelligence, putting them on equal footing mentally. They'll learn commands at similar speeds and need comparable amounts of mental stimulation to stay happy and well-behaved.

These breeds excel in different types of intelligence. The Chihuahua leans toward instinctive intelligence — naturally excelling at the tasks their breed was designed for, like guarding or herding. The Shih Tzu, on the other hand, shows strong adaptive intelligence — figuring out new situations on their own and reading social cues effectively.

For either breed, mental enrichment is just as important as physical exercise. Puzzle feeders, training sessions, scent work, and interactive toys keep intelligent dogs engaged and prevent the boredom that leads to chewing, digging, or excessive barking.

The Shih Tzu edges ahead as a family dog, scoring 4/5 with children versus the Chihuahua's 1/5. The Shih Tzu's affectionate temperament makes it especially patient around kids.

If you have other pets, the Shih Tzu tends to get along better with other dogs (4/5) than the Chihuahua (2/5). Proper introductions are still important, but the Shih Tzu is naturally more sociable with canine companions.

The Shih Tzu is more welcoming to strangers (4/5), while the Chihuahua tends to be more reserved (2/5). If you frequently have guests, the Shih Tzu's sociable nature will make entertaining easier.

The initial purchase price for a Chihuahua ranges from $400–$1,500, while a Shih Tzu typically costs $500–$2,000. The Shih Tzu is the more expensive breed to purchase.

Ongoing annual costs (food, vet, grooming) come to approximately $790 for the Chihuahua and $1,310 for the Shih Tzu. The Shih Tzu costs more annually, largely because of higher food costs.

Monthly food costs run about $20 for the Chihuahua and $30 for the Shih Tzu. Over a typical lifespan, the total cost of ownership can differ by thousands of dollars, so it's worth factoring in the long-term financial commitment.