george pennachio for abc news. >> i don't know who's next. >> all right. treadmills, yes garks even apps. >> we'll show you some of the high tech ways people are getting their pets to not weigh so much. >> and if you wanted to smell like a superhero, could you? >>> working out as gone to the dogs -- has gone to the dogs, pet treadmills and doggy yoga classes. we delve into the world of doggy fitness. >> what has 12 legs and close to half a million eyeballs, this video of dogs on a treadmill. the internet loves dogs on treadmills. they're so cute. look at their little feet move on a device made for people. if you dive head first into a youtube session of man's best friend on man's indoor exercise equipment, you may have noticed treadmills designed for dogs. dog treads specializes in dog treadmills. it will set you back $699. you can work out beside your pump they're lower to the ground. there's a training fence and a tree holder. dog fitness is a bigger industry than you might expect. owners who want to track how much their dogs are doing may want to look i