Boston Terrier
The Boston Terrier, nicknamed the 'American Gentleman' for its tuxedo-like markings, was developed in 1870s Boston from crosses between Bulldogs and White English Terriers. One of the first breeds developed in the United States, Bostons are compact, well-balanced companions known for their friendly disposition, expressive faces, and adaptability to city living.
11–15
years lifespan
15–25
lbs (male)
15–17
inches tall (male)
moderate
energy level
Temperament
How Old Is Your Boston Terrier in Human Years?
Use our breed-specific calculator to find out, plus get personalised health and care guidance for your dog’s exact age.
Open Boston Terrier Age CalculatorCommon Health Conditions
Brachycephalic Airway Issues
Milder than Bulldogs/Frenchies but present.
Typical onset: 1–4 years
Patellar Luxation
Kneecap displacement common in small/medium breeds.
Typical onset: 1–5 years
Hereditary Cataracts
Early and late-onset cataracts common.
Typical onset: 1–6 years
Congenital Deafness
Associated with white markings.
Typical onset: 0–0.5 years
Corneal Ulcers
Prominent eyes vulnerable to injury.
Typical onset: 1–10 years
Lifespan Factors
The median lifespan for a Boston Terrier is 13 years. Key factors that influence longevity:
- brachycephalic issues
- patellar luxation
- cataracts
- deafness
When Is a Boston Terrier Considered Senior?
Boston Terriers are generally considered senior at around 8 years of age. At this point, you should increase vet visits to twice yearly and watch for age-related health changes.
Check your Boston Terrier’s age in human years →