Keep doggie on leash or (if well trained to voice controls) behind you. Treat doggie’s poop like your own (i.e., bury it in a cathole). Be sure to condition the dog thoroughly before your hike to get him muscled up enough to carry his pack and to toughen up his pads. Take doggie boots along for rocky or graveled areas. Keep close track of your dog’s physical condition. Use Frontline or K9 Advantix monthly and comb him nighly (to get off any loose ticks) before putting him in your tent.
Realize that a lot of people have had bad experiences with dogs and are therefore quite hostile to or downright scared of them… Don’t let your dog run ahead and greet hikers with the inevitable crotch sniff–normal for dogs but very unnerving for many people. Also, many otherwise sweet and friendly dogs become protective and even aggressive in unfamiliar situations–the reason the leash is preferred. Keep your dog out of other people’s way and under control. It’s really important that you and your dog do not do anything to provide ammunition for the “ban all dogs” crowd. Show them that you can be good citizens!
It’s a lot more work taking your dog with you, but, IMHO, the rewards are worth it!
grannyhiker