I have been working with my Pyrenees mix -- I have a thread
here talking about what is going on. At first, I was absolutely sure it was my Pyr simply attempting to kill the other dog with no real fault on the other dog's part, but after watching the bulldog with other animals, I think that he at least has a share in instigating these incidents. I'm working with both of them (separately of course).
If you or anyone else have suggestions for trainers in the Nashville, TN area, I'd welcome them. I'm in research mode right now. We don't have the money to start right away (we could afford a Petsmart type class, but the ones in my area aren't very good), but hopefully in a month or two we'll be set.
We are working with a rescue to rehome the bulldog mix because it's not a livable situation with them both in the house. We're doing crate and rotate. He's actually going on a meet and greet with a potentional adopter this weekend who knows about what's up and about his needs as far as other dominant male dogs.
Since you seem to have some knowledge on this topic, if you don't mind if I ask you this, I would really appreciate it. My parents are concerned that because Bierce (the Pyr mix) has been vicious with the bulldog, it means that it is only a matter of time before he attacks my son (who he was raised with and has always been excellent with). They really want me to have him euthanized. Now, I don't leave (4) my son alone with my dogs to begin with, but from what I've read, this is not the case.