Chihuahua vs Saint Bernard

Which dog breed is right for you?

Chihuahua

Size
3–6 lbs, 5–8 in
Lifespan
14–16 years
Exercise
Low
Grooming
Low
Good with Kids
No
Good with Pets
Yes
Bold Charming Alert Devoted

Saint Bernard

Size
120–180 lbs, 26–30 in
Lifespan
8–10 years
Exercise
Moderate
Grooming
Moderate
Good with Kids
Yes
Good with Pets
Yes
Gentle Patient Watchful Friendly

About the Chihuahua

The Chihuahua is the world's smallest dog breed, originating from the Mexican state of Chihuahua where ancestors of the breed were kept by the ancient Toltec civilization. Standing just 5–8 inches tall and weighing a mere 2–6 pounds, these tiny dogs come in smooth-coat and long-coat varieties with virtually every color and pattern combination imaginable. Despite their diminutive size, Chihuahuas carry themselves with a bold, terrier-like confidence that belies their fragile frame.

Temperament & Personality

Chihuahuas are fiercely devoted to one person — often forming an almost obsessive bond with their chosen human. They are alert, spirited, and surprisingly courageous, frequently standing up to dogs many times their size without hesitation. While they can be wonderful companions for older children who handle them gently, their small size and tendency toward snappiness make them a poor match for households with toddlers.

Pros

  • Perfect apartment dogs — minimal space and exercise requirements
  • Exceptionally long lifespan of 14–18 years, among the longest of any breed
  • Portable size makes them easy travel companions for on-the-go owners
  • Low food costs and minimal grooming needs — especially the smooth-coat variety

Cons

  • Prone to patellar luxation, heart murmurs, hydrocephalus, and dental overcrowding
  • Fragile bones — easily injured by falls, rough play, or being stepped on
  • Notoriously difficult to housebreak due to tiny bladders and stubborn temperament
  • Tendency toward excessive barking and aggression toward strangers if not properly socialized

Discover your perfect pint-sized companion — explore Chihuahuas looking for forever homes right here on Puplister.

About the Saint Bernard

The Saint Bernard originated in the Swiss Alps at the Great St. Bernard Hospice, where monks bred these massive dogs for over 1,000 years to locate and rescue travelers lost in snowstorms along the treacherous mountain pass. Males typically stand 28 to 30 inches tall and weigh 140 to 180 pounds, though individuals exceeding 200 pounds are not uncommon. Their coat comes in two varieties — short-haired (smooth) and long-haired (rough) — both in white with red, mahogany, brindle, or brown markings.

Temperament & Personality

Saint Bernards are gentle, patient, and extraordinarily tolerant — their legendary devotion to humans extends to being remarkably careful and nurturing around children despite their massive size. They are friendly with strangers, other dogs, and household pets, possessing a calm, unflappable demeanor that makes them wonderful therapy dogs. While not aggressive, their sheer size and deep bark are often enough to deter unwanted visitors.

Pros

  • Exceptionally gentle and patient — one of the best giant breeds for families with children
  • Calm, low-energy indoor demeanor despite enormous size
  • Friendly and non-aggressive toward people and other animals
  • Imposing presence provides natural deterrent without guard training

Cons

  • Legendary drooling — especially the loose-lipped, heavy-jowled individuals
  • Short lifespan of 8 to 10 years, with some living even less
  • Prone to hip and elbow dysplasia, bloat, osteosarcoma, and dilated cardiomyopathy
  • Enormous food costs and substantial space requirements for comfortable living

Few breeds embody devotion quite like the Saint Bernard — find one in need of a loving home on Puplister.

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Frequently Asked Questions

What is the difference between a Chihuahua and a Saint Bernard?
The Chihuahua is 3–6 lbs, 5–8 in sized while the Saint Bernard is 120–180 lbs, 26–30 in sized. They differ in size (3–6 lbs, 5–8 in vs 120–180 lbs, 26–30 in), lifespan (14–16 years vs 8–10 years), and care requirements.
Which breed is better with kids, Chihuahua or Saint Bernard?
Chihuahua is not typically good with kids. Saint Bernard is generally good with kids.
Which breed lives longer, Chihuahua or Saint Bernard?
The Chihuahua has a lifespan of 14–16 years while the Saint Bernard has a lifespan of 8–10 years.

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