Bullmastiff vs Shih Tzu

Working · Large vs Toy · Small

Quick take
  • Bullmastiff is the larger breed at 110–130 lbs (males) vs 9–16 lbs for the Shih Tzu.
  • The Shih Tzu typically lives longer (10–18 years).
  • The Bullmastiff has higher daily energy needs.
  • The Shih Tzu sheds less.
  • The Bullmastiff is generally more trainable.

Side-by-side traits

TraitBullmastiffShih Tzu
Group
WorkingToy
Size
LargeSmall
Origin
EnglandTibet
Height (male)
25–27"9–10.5"
Height (female)
24–26"9–10.5"
Weight (male)
110–130 lbs9–16 lbs
Weight (female)
100–120 lbs9–16 lbs
Lifespan
Average expected lifespan.
7–9 years10–18 years
Energy level
Daily activity needs.
Moderate (3/5)Low (2/5)
Trainability
How quickly the breed learns commands.
High (4/5)Moderate (3/5)
Intelligence
Problem-solving ability.
High (4/5)Moderate (3/5)
Exercise needs
Daily physical activity required.
Moderate (3/5)Low (2/5)
Shedding
Lower = less hair around your home.
Low (2/5)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 Bullmastiff

The Bullmastiff is an affectionate, loyal, brave gamekeeper's night dog — Mastiff-Bulldog cross bred to subdue poachers. Originally from England, this large working breed typically weighs 110–130 lbs and lives 7–9 years. Breeders describe them as affectionate, loyal, brave.

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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Bullmastiff health

Common health concerns reported in this breed:

  • Hip dysplasia
  • Bloat
  • Cancer
  • Heart problems

Shih Tzu health

Common health concerns reported in this breed:

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