It all depends on when during her cycle that she was bred. The average size litter for a Boston is between 4-7 pups. Your vet should be able to do a ultrasound, or at least an xray around the 4 week mark - that way you will have a better idea of the possible number she is carrying. Xrays are not 100% accurate or determining the number though - ultrasounds are more accurate.

Litter size can vary widely. Rarely dogs will have singleton (only one puppy) litters. Most litters are between 3-7 puppies. At day 45 of gestation (pregnancy) the fetal skeletons calcify and can be seen on x-rays. This is the best way to estimate the number of puppies. Talk to your veterinarian about appropriate pre-natal care for your dog.

It depends! Some Female Boston Terrier produce 8pups! But a regular number of puppy that she can produce is 3-6 pups... Your lucky if she had 6pups :D most of the time she produce 4 pups ... Ask Vet ...

Boston Terriers usually have 4 puppies, if a boston has a cesarian then she can never have puppies again.

My boston terrier had her 1st litter 1 weeks ago today and she had 5 puppies......2 boys and 3 girls..all are very healthy.

If my boston terrier only had 2 puppies in her first liter, is that normal?

My boston terrier had 12 puppys ....2 died ..there full blooded ,,,she has 10 fat babys...is this rare.....