Almost all! From 8 lb Chihuahuas to 120 lb German Shepherds, from high-energy puppies (over 12 months) to active seniors. We adjust for size and fitness level. We don’t recommend it for dogs with severe joint injuries, heart conditions, or under vet exercise restriction – just check with your vet first. Flat-faced breeds like Bulldogs and Pugs are welcome with extra cool-down breaks.