I figure his name wasn't Tag along, but it sure sounds cute.
a little story..
Many years ago, 12 to be exact we had a westie puppy, Bogus, about to turn a year when we adopted a three week old lab/chow/dalmation mix puppy..(his mother was run over as the 8 puppies were eating cherrios and whatever this teenage girl was giving them..I felt bad and just had to at least "save" one of them..)Lou.
Well Lou was tiny, smaller than a 1 pound weight when we got him, so for him to tag a long on Bogus' endeavours he had to hang on to Bogus' tail, i.e he bit it and just held on for the ride..this continued for many years..by now of course the big mutt dog had outgrown the smaller westie by two folds..if not three, yet he kept on hanging on to Bogus' tail when they were running through the house or yard..such a funny sight..
Both Bogus and Lou passed away a year ago, exactly one month apart..
Just thought I'd share that since you too have a Tag along now.