English Mastiff vs Jack Russell Terrier
Working · Giant vs Terrier · Small
English MastiffGiant
A courageous, dignified, good-natured giant — the heaviest dog breed, ancient British war hounds.
Weight: 160–230 lbsLifespan: 6–10 years
Jack Russell TerrierSmall
A fearless, vocal, athletic small fox terrier — Eddie from Frasier, ten pounds of pure energy.
Weight: 13–17 lbsLifespan: 13–18 years
Quick take
- • English Mastiff is the larger breed at 160–230 lbs (males) vs 13–17 lbs for the Jack Russell Terrier.
- • The Jack Russell Terrier typically lives longer (13–18 years).
- • The Jack Russell Terrier has higher daily energy needs.
Side-by-side traits
| Trait | English Mastiff | Jack Russell Terrier |
|---|---|---|
Group | Working | Terrier |
Size | Giant | Small |
Origin | England | England |
Height (male) | 30" | 10–15" |
Height (female) | 27.5" | 10–15" |
Weight (male) | 160–230 lbs | 13–17 lbs |
Weight (female) | 120–170 lbs | 13–17 lbs |
Lifespan Average expected lifespan. | 6–10 years | 13–18 years |
Energy level Daily activity needs. | Low (2/5) | Very High (5/5) |
Trainability How quickly the breed learns commands. | Moderate (3/5) | Moderate (3/5) |
Intelligence Problem-solving ability. | Moderate (3/5) | Very High (5/5) |
Exercise needs Daily physical activity required. | Low (2/5) | Very High (5/5) |
Shedding Lower = less hair around your home. | Moderate (3/5) | Moderate (3/5) |
Grooming effort Brushing, bathing, professional grooming. | Very Low (1/5) | Low (2/5) |
Drooling Lower = drier face and furniture. | Very High (5/5) | Very Low (1/5) |
Barking How vocal the breed is. | Low (2/5) | Very High (5/5) |
Good with kids | High (4/5) | Moderate (3/5) |
Good with other dogs | Moderate (3/5) | Moderate (3/5) |
Good with strangers | Moderate (3/5) | Moderate (3/5) |
Protectiveness Watchdog tendencies. | Very High (5/5) | Moderate (3/5) |
Adaptability Apartment / new environment tolerance. | Moderate (3/5) | Moderate (3/5) |
Coat length | short | short |
Hypoallergenic Lower-shedding, less dander. | No | No |
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About the English Mastiff
The English Mastiff is a courageous, dignified, good-natured giant — the heaviest dog breed, ancient British war hounds. 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 Jack Russell Terrier
The Jack Russell Terrier is a fearless, vocal, athletic small fox terrier — Eddie from Frasier, ten pounds of pure energy. Originally from England, this small terrier breed typically weighs 13–17 lbs and lives 13–18 years. Breeders describe them as fearless, vocal, athletic.
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English Mastiff health
Common health concerns reported in this breed:
- • Hip dysplasia
- • Bloat
- • Heart disease
- • Cancer
Jack Russell Terrier health
Common health concerns reported in this breed:
- • Patellar luxation
- • Eye disorders
- • Deafness