Just a quick tip. My two Corgi's, Ryno (male-large) and Wrigley (female-tiny) often get into vigorous tussles with elevated growling and snarling. My cure is to use cherry frosting (you can see it on their white nose) or peanut butter. I place a small dollop on each one's nose and then they spend the next hour or so lovingly licking it off each other.
This works great if you have guests over, are watching a movie, kids are doing homework. We have only had one can of cherry frosting and it's over 1/2 full after 10 months.