First to Karen:
Yes he has had some obedience training...sits, waits, down, not too good on come when called, but eventually will, goes into his "house"/crate when told and whenever he wants treats. (He is not stupid just stubborn)
We did have a behaviorist come to the house and he "agreed" that "Butch" was wanting to be the alpha of the pack. Thus he suggested to move his "house" each night to different location so as to make him realize that we had control over his surroundings. That did work to some degree.
I walk him every morning on leash...albeit not far as we live in Florida where the heat/humidity can be difficult...and not good for Bulldogs. (Interesting is often he will growl at me when I'm affixing the leash..but does not or never has attempted to bite) He seems to enjoy the walks.
I feed him twice a day, (a.m. & p.m.) in conjunction with my other dog...no jealousy and not food possessive.
The prominent time for "most" his aggressive behavior is in the evening...say from about 6:00 p.m to bed. This is time he intimidates both my wife and my other dog...so much so that my other dog will not come out of kitchen unless I escort him....other than that they accept each other.
My wife thinks he has a mental problem??


K9soul
The problem, as we see it, is that Butch may not exhibit that behavior when the behaviorist is here...as he likes people.
My thoughts are that as my wife exhibits fear and that Butch senses that and takes advantage. (The problem may be, in part, training her to train Butch)
He is extremely friendly with strangers and actually runs to them for attention. No aggression towards other dogs.