Smart! imo bulldogs should never be left unsupervised with any dogs period. I believe you have to treat them like a loaded gun because of the potential damage they can cause. Even if another dog starts it with them and you are not around to stop them, bad news for the other dog. I believe prevention is key, keep them kept properly and you will be just fine.
I wouldnt go that far as to saying bulls should be treated like a loaded gun. respecting their power, yes, but it boils down to the handler trainer. Bullies aint a blood thirsty killer, but more of a teddy bear if taught properly.
