As for Grigs...

it never gets old seeing so called "mean" dogs rehabilitated and given a second chance in life
My parents currently have a dog that was at some point abused in some way. Kind of a pit/rott mutt. IThey told me of a story where it went chasing after a dog in the park, and literally dragged my step dad on the ground. They brought it to my house last year for the holidays. I was honestly scared (maybe an understatement) of this dog when they took it out of the car. Leash, harness and muzzle in hand my mother stood in the driveway for an hour and a half while it barked like crazy at me and my dog on my stoop. After some time, we got them in the house. After a couple more hours of keeping them at a safe distance, they eventually could be let loose. They had to be separated a few times, but eventually my dog, a black lab mix, ten pounds lighter, actually established dominance in my house. Ever since then their dog has been improving non stop, and now they have a second dog who is actually more of a handful for them than the first.Anyway, sorry for the rant, but I believe in the "rehabilitation" to some extent. I'm no expert, and I'm sure there are exceptions, but I've seen it done.