I have seven dogs: 3 Labs, 2 Heelers, one Catahoula and one Great Pyrenees/German Shepherd mix. Neither breed, Lab or GP, are wired for aggression. Protection, yes, but not aggression. There is a difference.
Rehabilitation is not always successful, with dogs and even with people. Taxpayers know the cost of that. Different subject, same soapbox.
Caging the dog in an inescapable, concrete bottomed, padlocked kennel is at the least cruel and inhumane. Both of those breeds need to run and be free. An LGD thinks of an acre of land as his living room. It is his mindset to oversee the land, to lay in the rain and snow, to roam and protect. A Lab is a cheerful, happy-go-lucky dog, always looking for the party. If there is a dog of either of these breeds that does not possess these traits or qualities, something is clearly wrong. The AKC has standards for dog breeds as does the APA for chicken breeds. It is what it is. However, sometimes things go awry. Wiring is short-circuited, in-breeding carried too far, etc. It can be seen everywhere in nature, but not always can be explained. However, we as humans are the stewards of the land and all that is in it.
It is our basic responsibility to take care of and protect what is ours, and to also make sure what is ours is not a danger to others.
Enough said. This dog is a danger to everything and most importantly your family. Make no bones about it, it is only a matter of time. You know where my vote stands. Euthanasia is best, all the way around.
And for what it’s worth...that’s my two cents worth!
PS: As I said earlier, rehabilitation is not always successful. And if a rehabilitated person can fail, what does that say about an animal.