Group Size Keep your group size below 10 people. Larger groups have a much greater impact on the land and on other hiker's enjoyment. If you bring your dog hiking, have it under physical restraint at all times. Be considerate of other hikers. Carry a leash and use it when around other people, or as necessary - and don't forget to clean up after your dog.
Dogs are a lot like people.
Hiking is hard work. Hiking above treeline, or on rocky, exposed trails can be especially hard on the dog's paws. Watch your dog for signs of stress and fatigue, making sure to give him plenty of rest and water as needed. This is misleading because many cases of hypothermia occur during the summer at temperatures well above freezing. It is lowering the inner core temperature of the body.