Boston Terrier vs Cavalier King Charles Spaniel
Non-Sporting · Small vs Toy · Small
Boston TerrierSmall
A friendly, bright, amusing 'American Gentleman' in a tuxedo coat — born in Boston, the original AKC breed.
Weight: 12–25 lbsLifespan: 11–13 years
Cavalier King Charles SpanielSmall
An affectionate, gentle, graceful spaniel — bred as a lapdog companion to British royalty.
Weight: 13–18 lbsLifespan: 12–15 years
Quick take
- • Boston Terrier is the larger breed at 12–25 lbs (males) vs 13–18 lbs for the Cavalier King Charles Spaniel.
- • The Cavalier King Charles Spaniel typically lives longer (12–15 years).
- • The Boston Terrier sheds less.
Side-by-side traits
| Trait | Boston Terrier | Cavalier King Charles Spaniel |
|---|---|---|
Group | Non-Sporting | Toy |
Size | Small | Small |
Origin | USA | England |
Height (male) | 15–17" | 12–13" |
Height (female) | 15–17" | 12–13" |
Weight (male) | 12–25 lbs | 13–18 lbs |
Weight (female) | 12–25 lbs | 13–18 lbs |
Lifespan Average expected lifespan. | 11–13 years | 12–15 years |
Energy level Daily activity needs. | Moderate (3/5) | Moderate (3/5) |
Trainability How quickly the breed learns commands. | High (4/5) | High (4/5) |
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) | Moderate (3/5) |
Grooming effort Brushing, bathing, professional grooming. | Very Low (1/5) | Moderate (3/5) |
Drooling Lower = drier face and furniture. | Very Low (1/5) | Very Low (1/5) |
Barking How vocal the breed is. | Low (2/5) | Low (2/5) |
Good with kids | Very High (5/5) | Very High (5/5) |
Good with other dogs | High (4/5) | Very High (5/5) |
Good with strangers | Very High (5/5) | Very High (5/5) |
Protectiveness Watchdog tendencies. | Low (2/5) | Very Low (1/5) |
Adaptability Apartment / new environment tolerance. | Very High (5/5) | Very High (5/5) |
Coat length | short | medium |
Hypoallergenic Lower-shedding, less dander. | No | No |
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About the Boston Terrier
The Boston Terrier is a friendly, bright, amusing 'American Gentleman' in a tuxedo coat — born in Boston, the original AKC breed. Originally from USA, this small non-sporting breed typically weighs 12–25 lbs and lives 11–13 years. Breeders describe them as friendly, bright, amusing.
About the Cavalier King Charles Spaniel
The Cavalier King Charles Spaniel is an affectionate, gentle, graceful spaniel — bred as a lapdog companion to British royalty. Originally from England, this small toy breed typically weighs 13–18 lbs and lives 12–15 years. Breeders describe them as affectionate, gentle, graceful.
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Boston Terrier health
Common health concerns reported in this breed:
- • Brachycephalic syndrome
- • Eye problems
- • Patellar luxation
- • Allergies
Cavalier King Charles Spaniel health
Common health concerns reported in this breed:
- • Mitral valve disease
- • Syringomyelia
- • Hip dysplasia
- • Eye problems