If you’ve ever seen a dog bolting down a trail with ears flying, legs stretching, total bliss on four paws, it’s easy to think, this is the perfect running partner. And for a lot of runners, it is. Your dog doesn’t care about your pace, has endless enthusiasm, and keeps you honest on the days motivation is nowhere to be found. But if you're working toward a performance goal or coming back from injury, logging miles with your pup might feel... different. Not bad. Just differen