Two events have happened since the publication of the original 2017 version of 57 Dog-Friendly Trails. First, the Caldor Fire in 2021 severely damaged some of the trails making them unfavorable for hiking. Second, new fees and seasonal closures have affected many trails. Thus, a revision of 57 Dog-Friendly Trails was necessary. Fortunately, I had found a number of new trails to replace the damaged ones, and I was able to move the time for doing others into months before or after fees are charged. California's foothills and the Sierra Nevada are lush with trails taking you to different venues - wildflowers, waterfalls, alpine lakes, meadows, snow, and flowing rivers. Along with the variety of destinations, this revised book offers: all dog-friendly trails directions to 57 trailheads 4+ trails for each month for optimal enjoyment trails for mountain bikers and equestrians family-friendly trail options before and after the hike suggestions