Quick background, I am posting this as an avid backpacker, a former professional dog trainer and a current volunteer with a K-9 search and rescue team. I am not implying not implying that what I say here is the end all be all of hiking with a dog by any means. I know that there are many many ways to get the job done. This post is just to offer some further insight or additional personal thoughts after reading the two actual articles on here. Also, I am writing this from the perspective of a hiker that lets his dog run off leash and bound happily through the woods. Okay with all that said...
The number one most important thing in hiking with your dog is to know your dog. You know what your dog likes, what he/she doesn't like, how they react to different scenerios etc. Every dog is an individual as anyone who is seriously considering bring a dog on the A.T. should already know. If you haven't had you pup/dog long enough to really know them don't take them or at the very least take them with a solid back up plan so that 4 days in if your pup can't or simply doesn't want to hack it, he doesn't have to. Remember, you know why you are hiking, you know your motivations. YOUR DOG DOESN'T. Its just another part of life to them. You can train your dog to death and have a puppy that responds perfectly to ever command but it doesn't mean he wants to wander through the woods for weeks/months/even weekends at a time. This also plays in to how to hike with your dog. I have two dogs. The one coming with me loves to run off leash. He just wants to see and explore and experience every little tiny minute terribly miniscule thing, at a running pace of course. My other boy just walks behind me so close that he occasionally steps on my heels and is as happy as pie being outside and hiking with dad but has no need to go running everywhere. What this means to me, It means that I need to have a pretty solid recall/come command for him. Why? Because all the training in the world isn't going to make this dog HAPPY walking slowly on the leash beside me all the way down the A.T. If I additionally couldn't trust that he will listen to my commands enough to keep him safe I felt I would need to leash him to take him... I wouldn't be taking him. You have to acknowledge your dogs interests and motives and adjust and prepare accordingly. Also consider this old relationship saying. If your going into it expecting your partner to change the partnership is destined to fail. I think the A.T. will be a tremendous bonding journey for Aramis and I. All my dogs have learned love and devotion best by hiking with me because I worry about what they want and need and do my best to make sure that everyone is having a good time and is safe.
Speaking of safety go into the hike with this assumption(even if it isn't true). Your dog is not in better shape than you are. A dog will run until it dies out of excitement and joy. We know better, they just think life is awesome until it isn't. I know the mileage I want to make and it is going to frustrate me a bit the first week on the trail because I am doing short days like 8-9 maybe 10 miles. Again this is because my dog is off leash. I accept that that 8-10 miles for me will be like 16-20 for him. I take my puppy on trail runs and I lojack him sometimes. I run at an average of 6-7 miles and hour for longer runs, even with that on a 7.5 mile trail run I remember he ran 16.5 when i checked the gps later. Just the other weekend I went backpacking with my boys and did about 9 miles each day. Sort of boring because that is about 4 hours of hiking but the dogs were playing and attentive and excited to be on the trail the next day which is what I want. I don't care if I am exhausted on the trail because I did it to myself but I want that pup of mine to want to play tug and roll on the ground at the next morning instead of being all sore and stiff. I would also recommend learning dog massage. I am not kidding! Think how awesome it would be if at the end of a long day you could get a nice massage when you dropped your pack, if someone rubbed your shoulders, and worked the kinks out of your back and legs. Yea exactly it would be AWESOME!! Also doing this will help keep your pup from feeling as sore and more prepared for the following day. I would also recommend teaching your dog to stand and stay or stand for inspection. My boy will stand still while I pat him down on the sides, check his ears/teeth, walk around him and lift up each leg and check his pads and feet etc. It makes it a lot easier.
Another thing to consider is this. The hardest thing I ever had to overcome in training and in dog ownership is that they weren't computers. Know that your dog will never ever ever never be totally predictable. An example, my last dog was actually a better hiker than Aramis, he had a fairly strong prey drive but I could call him out of a solid run after a deer. Even with that ability, about once every day when I would hike with him he would just run off and when I called him he would just blow me off. Why, because he wanted to and knew that if he is off leash there is only so much I can do about it. That is a frustrating but very valid reality. Always err on the side of caution. Your dog may love people and other dogs, and care not much for animals BUT, know that he/she might sporatically change his mind one day. Just like you can walk down a street past someone and even though no conversation took place you just decide, I don't like/trust/want to be near that person. Your dog does that too. Some are obviously more tolerant than others but just something to consider when you see other people, or other dogs etc. I have my boy trained that if we walk up to other hikers he won't pass them, and he will stop and I call him back if he is on the trail when hikers come my way and definately if any of those hikers have a dog. I don't always leash him but I might step off the side of the trail with him when people come by and hold him by the collar until they pass. Admittedly sometimes I just tell the people that he is okay and ask if they want me to call him back and if not I will tell him he can go on past them but I realize that this isn't the best or safest technique. It is much better to have physical control of your dog while passing other hikers and I hear that the hikers appreciate it more as well. Then again F them hyoh. LOL just kidding.
Oh one last thing, even with my off leash running puppy, when it is time to enter camp he is an ON leash puppy. That's all for now but I thoroughly enjoy talking dog so feel free to message me and as more questions if you like what you have read so far. If not, please no negativity on this thread. I know no everyone will agree.