Bullmastiff vs Cairn Terrier

Working · Large vs Terrier · Small

Quick take
  • Bullmastiff is the larger breed at 110–130 lbs (males) vs 14 lbs for the Cairn Terrier.
  • The Cairn Terrier typically lives longer (13–15 years).
  • The Cairn Terrier has higher daily energy needs.
  • The Cairn Terrier sheds less.
  • The Bullmastiff is generally more trainable.

Side-by-side traits

TraitBullmastiffCairn Terrier
Group
WorkingTerrier
Size
LargeSmall
Origin
EnglandScotland
Height (male)
25–27"10"
Height (female)
24–26"9.5"
Weight (male)
110–130 lbs14 lbs
Weight (female)
100–120 lbs13 lbs
Lifespan
Average expected lifespan.
7–9 years13–15 years
Energy level
Daily activity needs.
Moderate (3/5)High (4/5)
Trainability
How quickly the breed learns commands.
High (4/5)Moderate (3/5)
Intelligence
Problem-solving ability.
High (4/5)High (4/5)
Exercise needs
Daily physical activity required.
Moderate (3/5)Moderate (3/5)
Shedding
Lower = less hair around your home.
Low (2/5)Very Low (1/5)
Grooming effort
Brushing, bathing, professional grooming.
Very Low (1/5)Moderate (3/5)
Drooling
Lower = drier face and furniture.
Very High (5/5)Very Low (1/5)
Barking
How vocal the breed is.
Low (2/5)High (4/5)
Good with kids
High (4/5)Very High (5/5)
Good with other dogs
Moderate (3/5)Moderate (3/5)
Good with strangers
Moderate (3/5)High (4/5)
Protectiveness
Watchdog tendencies.
Very High (5/5)Moderate (3/5)
Adaptability
Apartment / new environment tolerance.
Moderate (3/5)Very High (5/5)
Coat length
shortwirehaired
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 Cairn Terrier

The Cairn Terrier is an alert, cheerful, busy little Scottish ratter — Toto from The Wizard of Oz, the 'small dog with big heart'. Originally from Scotland, this small terrier breed typically weighs 14 lbs and lives 13–15 years. Breeders describe them as alert, cheerful, busy.

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Bullmastiff health

Common health concerns reported in this breed:

  • Hip dysplasia
  • Bloat
  • Cancer
  • Heart problems

Cairn Terrier health

Common health concerns reported in this breed:

  • Patellar luxation
  • Eye disorders
  • Hypothyroidism