Try anti-bark collar. They work on the same
order of invisable fencing. You probably
should have let them settle the pecking order on their own, not just give up and make him
an outside dog. Is he and the other dog
neutered. It is not only keep them from being so aggressive, but helps them to live
longer with less medical problems. I am also sure that if worse comes to worse and you have to get rid of him, that there is a Dalmation rescue assn. in the area. Don't just have him put down, or taken to a shelter. We work with a rescue group ourselves and have delt with the same problems with our dogs, and foster dogs we have taken in until an adoptive home can be found. They have always managed to settle the problems on their own.