If you’ve ever seen a trail dog running alongside a mountain biker or runner then you know how awesome a companion that dog is. Ruby is a 4-year-old Hungarian Vizsla and as you can see in this video she is incredibly skilled and fast. Ruby has been running with her owner Tom since she was a puppy and he has put countless hours into training her to be such a good Trail Dog. I hope she gets plenty of nutritious dog treats after her trail runs.