Roxy loves it but Tyson hates it. I think its all how you introduce it to the dogs. so take alot of time just letting him/her sniff it out and use treats or whatever coaxing method you use to just get the dog to stand on it (OFF) a few time then start in really slow. I used a leash with her and stood next to her like if we were on a walk and found the pace she liked the most.
but most important thing is to take your time with dog getting used to treadmill