Every breed has common health problems. For Boston Terriers, there are several:
Allergies (environmental or food-related): Ask your doctor about Benadryl and limited ingredient food, such as Natural Balance.
Luxating patella: Bad knee caps, which may require surgery due to discomfort and pain. This is common in small-breed dogs. This could be the issue if your Boston is only using three legs.
Tumors: This includes both fatty/benign and mass cell/cancer tumors.
Thyroid disease: Low thyroid is common. A dog may test in the low-normal range. Medication is recommended if 1.6 and lower. Tests should include the T4.
Heart disease: This could include a heart murmur, which requires medication, or congestive heart failure.
Seizures: If you dog has more than one seizure in a 30-day period, consult your veterinarian immediately. Medication will be required, usually Potassium Bromide.
Breathing difficulties: Usually when stressed by exertion in hot and cold weather.
Reverse Sneezing: gulping air and wheezing.
Overheating: Bostons are indoor dogs and should not be left outside or in your vehicle for any length of time.
Anal gland infection
Gas: Bostons have sensitive stomachs, so feeding them the right food is important, Many foods will cause gas. Recommended dog food to eliminate gas problems in Bostons is Purina One Sensitive Systems, Purina Pro Plan Sensitive Stomach, or Natural Balance.