I would most definitely keep this trainer's business card. File it away. Sometime down the road. Years from now, if your baby EVER, god forbid develops any kind of trachea problem, be it hereditary or what. Doesn't matter...he's gonna be the guy you're gonna want to sue...
oh yeah!!
Ya know, I'm thinkin' of about the only place to put a prong collar right now, and it DOES involve soft, tender, starts with a 'T'... HAH! does the word testicles getcha banned? anyway...that and being dragged....
I have two girls both 4 1/2 months.. they fight like cats.. once in awhile one will yelp..the yorkie equivalent of 'uncle'...then they take a break..get a drink. and start back up... they make a huge racket sometimes..but you can tell they are having a blast. They play chase...they sleep together, eat together, explore together and sometimes go their separate ways. All part of being puppies and bonding. They'll get spayed for their 6 month birthdays. I cannot imagine one without the other. I think one would be awful lonely. And you're right. I can't see going through puppyhood twice. LOL...
You cared enough to seek expert advise and that says alot about what a great owner you are. Not your fault you got a moron. Keep that number!!