Mastiff vs Shih Tzu

Working · Giant vs Toy · Small

Quick take
  • Mastiff is the larger breed at 160–230 lbs (males) vs 9–16 lbs for the Shih Tzu.
  • The Shih Tzu typically lives longer (10–18 years).
  • The Shih Tzu sheds less.

Side-by-side traits

TraitMastiffShih Tzu
Group
WorkingToy
Size
GiantSmall
Origin
EnglandTibet
Height (male)
30"9–10.5"
Height (female)
27.5"9–10.5"
Weight (male)
160–230 lbs9–16 lbs
Weight (female)
120–170 lbs9–16 lbs
Lifespan
Average expected lifespan.
6–10 years10–18 years
Energy level
Daily activity needs.
Low (2/5)Low (2/5)
Trainability
How quickly the breed learns commands.
Moderate (3/5)Moderate (3/5)
Intelligence
Problem-solving ability.
Moderate (3/5)Moderate (3/5)
Exercise needs
Daily physical activity required.
Low (2/5)Low (2/5)
Shedding
Lower = less hair around your home.
Moderate (3/5)Very Low (1/5)
Grooming effort
Brushing, bathing, professional grooming.
Very Low (1/5)Very High (5/5)
Drooling
Lower = drier face and furniture.
Very High (5/5)Very Low (1/5)
Barking
How vocal the breed is.
Low (2/5)Moderate (3/5)
Good with kids
High (4/5)Very High (5/5)
Good with other dogs
Moderate (3/5)High (4/5)
Good with strangers
Moderate (3/5)High (4/5)
Protectiveness
Watchdog tendencies.
Very High (5/5)Low (2/5)
Adaptability
Apartment / new environment tolerance.
Moderate (3/5)Very High (5/5)
Coat length
shortlong
Hypoallergenic
Lower-shedding, less dander.
NoYes
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About the Mastiff

The Mastiff is a courageous, dignified, good-natured giant — one of the most ancient breeds, formerly war dogs. Originally from England, this giant working breed typically weighs 160–230 lbs and lives 6–10 years. Breeders describe them as courageous, dignified, good-natured.

About the Shih Tzu

The Shih Tzu is an affectionate, playful, outgoing lapdog of Chinese imperial origins — happy as long as it's near you. Originally from Tibet, this small toy breed typically weighs 9–16 lbs and lives 10–18 years. Breeders describe them as affectionate, playful, outgoing.

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Mastiff health

Common health concerns reported in this breed:

  • Hip dysplasia
  • Bloat
  • Heart disease
  • Cancer

Shih Tzu health

Common health concerns reported in this breed:

  • Brachycephalic syndrome
  • Eye problems
  • Hip dysplasia
  • Dental issues