Above is Mazunte (the small one) and Solan, when they first met, three years ago. I walked slowly to the cabin with Mazunte, letting him get to know the area, letting him get to know me. And once we came to my place I let him run around as much as possible among the grown-up dogs. Most dogs will put a puppy in it's place, but not hurt it. This way, the new arrival learns the ropes.
But despite this attempt at creating social cohesion and stability: Mazunte and Solan had a real brawl the other day. (They're the same size now.) If I hadn't hooked Solan's collar to a chain and whacked him on the head with a club until he let go so I could drag Mazunte away they would still have been at it. Unacceptable as this is: If you surround yourself with life you are going to surround yourself with problems, too.