I was playing with Zoey my first Boston Terrier back in 2010 when I noticed she had a very short nub of a tail that didn’t wag.
Instead her whole back end would wiggle when she was excited.
Later that night after I put her to bed I looked up if Boston Terriers were born with or without a tail? I was relieved to read that:
Boston Terriers are born with naturally short tails due to a mutated gene that causes the tail to grow unusually short.
Somehow this made me feel better. The thought of Zoey’s tail being lopped short disturbed me and I was glad Boston Terrier’s tails were not docked.