Secondly, you would require to have a good quality first aid kit in your gear backpack, which should essentially have bandages, gauze, cotton swabs, blunt-tipped scissors, tweezers. Also, keep track of the medicines and vitamins of your dog.Needless to mention, but your dog should be hydrated during hiking. Although the water in streams and lakes appears safe, it might be full of insects and viruses. You can take water in a bottle or thermos; however, you need to pack plenty of water while hiking. Also, check with your veterinarian to ensure that your pet receives the proper quantity of calories for the amount of energy he is expected to use.