NC Hauler.. a "big dog" truck is simply a bigger stronger vehicle than a small one. In every group of dogs there's always an "alpha" male and he is the Big Dog.
There's also a saying... "if you can't run with the Big Dogs stay on the porch".
It's just a way of highlighting the more powerful object.
Our friend just happens to own a Ram diesel that can tow just about anything. I can ride in his truck and not deal with a salesman right away.
I've had Chevy/GM's for a long time and while I like them...Dodge compared well in Consumer Reports too. Our Ram friend thinks I should get a Sierra... he's impressed with the comfort and finish.
Thanks to all for the education. There's a lot of experience here and y'all are generous with sharing it. I'm sure there's a few folks out there that learned something new too.
cts