Hey! The Great Pyrenees is great news! They will guard ANYthing! Your chickens will be safe with that kind of guardian. You can leave the dog alone with them even, and they will be safe. you can find many posts on BYC about it, plus I am friends with a couple of people who breed and show...
p.s. 120 pounds is huge for a huskie... I would bet it's a malamute or a mix with something else. That aggressive behavior doesn't sound like husky at all to me. I know that's not the point here, but I just thought of it.
all I will say is that I am both a chicken lover and a dog lover and I securely fence my large dogs to keep them away from my chickens and my neighbors animals (sheep, horses, cats, etc). That is true love for a dog.
As for that huskie, if it truly threatened you and attacked your dog, you...