Goose I am 63 and am coming up on 40 years with this breed and I respectfully disagree on the chain being the reason they " turn on". I have raised countless bulldogs and don't believe the chain or kennel made any difference in dog aggression. I have gotten where it is second nature to be aware of how the dogs are reacting and nip it and I don't ever leave them together unattended. Starting with a game bred dog as you're catch dog if you are inexperienced is a recipe for disaster. But if you know what you are getting in to it can work. But like Rueben says, things outside your control can light a fire in a hurry.
I'm pretty sure you and I both know what "turns on" a bulldog, I never said by putting one a chain is what makes them "turn on", but by putting them on a chain, mostly permanently where he will live out his days, especially after being raised running loose and in the house it changes a dogs attitude and demeanor, I'll give two prime examples, the little gyp I mentioned above never once offered to mess with the pig my mother had bottle raised, whenever the pig would come on her porch the gyp would get up and leave, my place is right next to my parents and my yard dogs go back and forth, a fella whom I didn't really know asked me about my gyp one day at the gas station as I was leaving to go out of town to work, so I got my dad to put her on a chain, now this dog had never shown any forward aggression but would definitely defend herself, after being on the chain for several weeks something changed with her, as soon as she got loose she hit anything and Everything in her way and did it with a vengeance beforehand she was above average cool calm and collected, she was never quite the same dog not that it's a bad thing, another example is a male we're using now, he never would fire up on anything other than defending himself, we put him on a chain for two months and only fed watered and pet him and the next time we messed with him he took to it like a duck to water, I've only seen this display in APBT and my theory is by being constrained it in a way teases them and makes them mad, sort of a chip on their shoulder type mentality...
Sent from my iPhone using Tapatalk Pro