Jack Russell Terrier vs Mastiff
Terrier · Small vs Working · Giant
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
MastiffGiant
A courageous, dignified, good-natured giant — one of the most ancient breeds, formerly war dogs.
Weight: 160–230 lbsLifespan: 6–10 years
Quick take
- • 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 | Jack Russell Terrier | Mastiff |
|---|---|---|
Group | Terrier | Working |
Size | Small | Giant |
Origin | England | England |
Height (male) | 10–15" | 30" |
Height (female) | 10–15" | 27.5" |
Weight (male) | 13–17 lbs | 160–230 lbs |
Weight (female) | 13–17 lbs | 120–170 lbs |
Lifespan Average expected lifespan. | 13–18 years | 6–10 years |
Energy level Daily activity needs. | Very High (5/5) | Low (2/5) |
Trainability How quickly the breed learns commands. | Moderate (3/5) | Moderate (3/5) |
Intelligence Problem-solving ability. | Very High (5/5) | Moderate (3/5) |
Exercise needs Daily physical activity required. | Very High (5/5) | Low (2/5) |
Shedding Lower = less hair around your home. | Moderate (3/5) | Moderate (3/5) |
Grooming effort Brushing, bathing, professional grooming. | Low (2/5) | Very Low (1/5) |
Drooling Lower = drier face and furniture. | Very Low (1/5) | Very High (5/5) |
Barking How vocal the breed is. | Very High (5/5) | Low (2/5) |
Good with kids | Moderate (3/5) | High (4/5) |
Good with other dogs | Moderate (3/5) | Moderate (3/5) |
Good with strangers | Moderate (3/5) | Moderate (3/5) |
Protectiveness Watchdog tendencies. | Moderate (3/5) | Very High (5/5) |
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 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.
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.
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Jack Russell Terrier health
Common health concerns reported in this breed:
- • Patellar luxation
- • Eye disorders
- • Deafness
Mastiff health
Common health concerns reported in this breed:
- • Hip dysplasia
- • Bloat
- • Heart disease
- • Cancer