I don't believe male cavaliers fight in general. My Jake is such a big baby boy. Jake is super loyal to me but I think that is more because he was my first dog. When we got Shelby, she was a little more independent. The only time these two squabble is over bully sticks...and it's always Shelby who's the instigator.
These guys are such lovable and friendly pups. We went to a party last summer where there were, I believe, 80+ cavaliers and these was not one single fight the whole time. Just a very even tempered breed.
Loving mom to Jake, Shelby and Micah