Please dont be offended. A biting dog is a "hot" topic. It charges people and they want to help fix the problem so much, that they come off as attacking you. I think most people have been guilty of this from time to time.
I am now going to give my 2 cents worth on this. I started my farm around 3 years ago and our property is surrounded by coyotes so a LGD was one of our first purchases. I spent many, many hours researching and talking to others with LGD and as soon as I thought I knew something, someone would tell me the opposite. I did decide on a Pyr since that is one of the few facts that seemed clear - they are easier to handle. About 50% of the people / websites said I needed to get 2 dogs so they could play with each other and not with the goats. Around 1/2 said training is necessary, others said hands off. The facts about feeding, vet care, housing etc... all said different things. I know several people who have LGDs and each person has a different set up and different belief system about how to make a great LGD. I know someone who has an Antolian that they only touch once a year, they have 100s of acres and it roams with the herd. It protects the goats and lives with them full time. It doesnt like or want people but once a year, she catches it, muzzles it, vet inspects it, shots are given, nails done and it is released. Some people would say that is wrong, I however believe, the dog is happy and since she gives it food and vet care I think it is a system that works for her and the dog. I think there a 100s if not 1000s of ways to raise a successful Livestock Guardian.
Here is what I did...
I purchased one male Pyr puppy from full time, live outdoor, working stock
I did a more hands off view, I have never treated him like a pet and though I would not call him bonded to me, he is happy to see people (shots, shaving, nails are never a problem)
When he was too rough with the goats, I didnt correct him. He has learned to be gentle and I found that he now only "plays" with our buck
He has a very heavy herding instict which worried me but he now uses it to round up the goats to protect them when danger is near
I understood and accepted the learning curve with a giant puppy - I knew that he may not work out as a LGD and a goat may get hurt in the process
I think the most important thing that I did was listen to myself - I gained all the advise people would give and then I made my own decision. And understood it may be wrong!
So my opinions about LGD's in general is this...
I dont believe in trying to bond with a LGD - I dont need or wish to have kisses, love or admiration from them. I have pet dogs for that. So I keep training and bonding to a minumum. Respect is earned in the eyes of a LGD, not forced. Mine respects me. I am boss just by how I carry myself. I have seen him bow to 6 year olds who carry themselves as boss and jump on adults that come in to the pasture with an air of submittion. I ask visitors to treat him like you would the buck goat - with respect. I love him but he goes in the catagory of livestock and if ever I decide to stop keeping goats, he will go with them. He would be unhappy as a pet.
I have seen 2 dogs work in tandum with such grace, gentleness and purpose that I know 2 can work (even 2 girls) but mostly a pair is recommended, girl boy with one or both fixed.
A lone dog will take on behaviors it learns from the goats and I think this is a sign of true bonding which is exactly what I hope for in a LGD (mine chews hay and head buts
)
Having a dog fixed early is a great way to lessen distractions and make it a great protector
No matter the kind of dog and type of training or lack of, NOT ALL DOGS ARE GOOD LGD. Some will fail to protect no matter what you do and other breeds that are not likely candidates will do the job.
Keeping a regular schedule helps the dog know what to do when.
Allowing the dog(s) to make it's own decisions is critical to a LGD. I wont be their to use the "training". It either will do the right thing or not, they are and should be very independant.
These are just my opinions - I hope you will take what you want from them and leave the rest. These are your dogs, your decisions and because every set-up, person, dog and livestock is different, I believe only you can decide what is right. I know what I would do but I am not you.