Are Boston Terriers Born With Tails. This very short tail is the breed standard and is entirely normal! If your boston terrier has a long tail it was most likely because another breed was added to the line in the last 10 or so generations.
It does not mean your boston isn't full blood. Although their tails are generally short, they can also have long tails. A lot of them are born with a little tail called a nib which is mentioned as a standard characteristic.
