Pets are not permitted on the Ridge or Saddle Trails on Old Rag Mountain. Please do not bring pets if you plan to hike Old Rag. Old Rag is Shenandoah's most popular and most dangerous hike. The number of blogs and websites about this hike attests to its popularity. The number of search and rescue missions each year attests to its danger. There's no doubt that the scramble is great fun and the views are spectacular. A day on Old Rag is one of Shenandoah's premier experiences. We want to be sure that your experience is not marred by an accident or health issue that could be prevented with good planning. Preparing to Hike Old Rag Mountain - Shenandoah National Park (U.S. National Park Service)