There is a BIG difference between raising an animal for meat and slaughtering them, and raising a dog to fight (sometimes to the death) and because it loses a fight you beat it to death or hanging it. Most animals for meat products are killed quickly and as humanely as possible. I do not see how you compare a pig which is raised for either medical research or meat, verses a dog which is raised for companionship and protection.
I'm not against medical research on animals or eating animals when it is necessary. I am against denial about it. And I hate cruelty. That's my big turn-off. When James Lipton asks me what turns me off, it'll be cruelty.