My ASD is more concerned with asserting alpha status and fighting over it rather than making friends.

A few months back I got a ASD from the local animal shelter. He is very sweet with people, all he wants is belly rubs. The problem is other dogs don't like what he's selling through the fence and will run back to their owner and bark at him. Close contact he will fight after a brief face off. I've never seen him sniff another dog.

He does want to play, he just doesn't understand how to get there without a fight.

Any tips on getting him properly socialized?