I havent read all the replies, so this may be redunant….
I take my dogs in CA bear country all the time. As a service dog, I am assuming your dog is well trained with good obidience. My dogs all go off leash with me, but with a simple comand they will come to my side and sit. I use this anytime I pass other hikers on the trail. On the numerous occaions I have seen bears, I put my dogs in a down and wait position…even if they are mid sprint after an animal, they will stop and lie down. Good obidience is very important in the backcounty…for wild animals, other hikers, dangerous stream crossings, and tough off trail routes. If yours isnt at that level, you have some time to work on that. its MUCH more enjoyable for you and your dog when they can be off leash. I am also a big supporter of remote shock colars (I am sure ill get some issues with this from people). But if used properly and safely they can be an amazing tool. My dogs LOVE their shock collars…when they go on they know fun and adventure awaits. if your interested in these check out TriTronics (now owned by Garmin). They are very high quality colars with a long range and fully waterproof.
On another note, check out The Honest Kitcken Dehydrated Dog food. Kibble starts to add up quickly and take up a lot of weight and space. The Honest Kitchen makes some great dehydrated food that my dogs love, is good for them and packs plenty of nutrition for long trail days. All at half the weight and space. My dogs keep most, if not all their food in their packs (depending on how long we are going for). I keep the food in zip locks and then in small dry bags. My dogs love to swim, and the last thing you want is to get their food all wet.
Check out Mushers Seceret. you can get it in Amazon. its a waxy like balm you rub on your dogs paws for protection…I find it works MUCH better than booties. I apply it to my dogs paws ever morning before we hit the trail…after weeks of hiking on granite, my dogs paws dont have any tears or rips or raw spots. Also consider talking to your vet about getting some medications to bring for your dogs…there are very specific human medications that your dog can and cannot have. See about some good pain medication and an antiimfalmatory as well as a antihistamine like benedryl. Ask your vet about correct dosages for your dog.
Hope this helps a little! Hiking with a dog is so much fun!
if you have any questions about specific dog training to get your pup up to a good level of obidience off leash feel free to PM me.