Used this to help my elderly three-legged dog get around ...
932771
Used this to help my elderly three-legged dog get around.  You can't leave it on the dog as it just slip right down their body.  But if you can get them up enough to slip it around them each time, it's very helpful.
1737640
Very good harness. Very sturdy. Definitely helps with the mobility of my aging (16 year old) 60 lb dog. I am able to help him in and out of the car and up and down steps. I love the harness!
2417224
Great product.  My dog is old and these have helped her get mobile again.
3041337
I have been using this for the last three years and it has helped my dog a great deal.
1945064
Been using this for the last 3 or 4 years and it helps in mobility for my chow chow.
1800481
Saved the dogs back leg which was injured from having to jump in/out of the car's back seat of the mid-level SUV.  Folds up easily.  If keeping it in your backseat watch out for the sandpaper on the interior of the ramp- we just covered it with a beach towel to save the interior of the car.  Dog took to using it pretty quickly.  Life saver for elderly dogs!
4369196
It sure helps walking my three dogs. It was impossible to walk them by myself before and I was wrapped up like a ball of string.
1126178
This has been a HUGE help.  I have a 14yo husky with limited mobility/spinal arthritis who uses a ramp to get in/out of the car.  I had a hammock on the seat so he couldn't fall, but he would lose his footing regardless when turning around or stepping on the unsupported portion.  This has provided a much more firm surface and he is less wobbly when riding/turning around.  It's still a bit slippery for him (probably wouldn't be an issue for the average dog), so I have attached a beach towel on top of it using velcro.  Was easy to install and seems sturdy/durable.  Just for reference, I have a subaru impreza wagon and it fits well.

UPDATE:  I'm knocking one star off after using this for awhile.  Depending on how it fits in your car, be aware that it is possible for your dogs legs to fall down between the car door and the side of this.  My dog had this happen while I was driving and I had to pull off the highway to get him freed.  Might not be a bad idea to stuff a towel along the sides if there is even a small gap.
3799793
This model of Pet Stairs works well in helping an older dog get in and out of our car (which is a sedan). However, getting our dog to use it was a problem.  I have used a pet treat on the top step to encourage our dog to mount the steps to obtain it. We are almost successful!  Given a few more times and she will get used to it. This model is not too large to just put in the car trunk for future use. Good price too!
2825659
My elderly dog had Vestibular syndrom, loss of balance etc. This harness enabled us to protect her from harming herself by falling with the handle on the top. Regular collars are not good as they pull the neck of the animal. This has made all the difference and she likes it also.
3348386
It is working however it isn't long enough for the 4 steps that my elderly dog needs to go up. I put a painter's walk plank scaffold under it to lengthen it. It works so my dog will go down it but it is still too steep for him to go up it, he uses the steps up and plank down which is really great for a 78 lb lab mix. I'm happy and hope he uses it this winter when snow comes.
3499119
I ordered this for my older dog because she couldn't jump on the bed anymore.  She kept trying and hurt herself.  The vet bill was $400.  It took her a little while to get used to using these but now she uses them all the time.  Then my neighbor ordered some for her dogs.  They were able to get used to them right away.  I have a dog that stand about knee high and I think the 4 steps are a little awkward for her.  My neighbor's dogs have much shorter legs so the 4 steps are better for them.  I think I should have gotten the 3 step option and they would have been easier for my dog to get used to using.  That is something to think about if your dog has longer legs.
3228035
We tried this for three months on our 13-year-old Lab.  I'd say his mobility improved to a moderate degree.  The difference isn't as marked as when we put our previous elderly Lab on Rimadyl, but considering that Duralactin is over-the-counter and doesn't have the side effects that Rimadyl has, I'd say it's fairly effective.  He had begun having trouble jumping onto the bed, and occasionally would even slide back off the side in the attempt.  On the Duralactin, he makes the jump with more ease.  He is also having less of a problem losing traction on our wood floors.  I didn't give the product all 5 stars since it's not a HUGE difference, but since it does seem to help him to a decent degree, I'm re-ordering.
2435728
Great! I have two older dogs and a GSD with hip dysplasia and it seems to help with their mobility.
3260637
Lightweight, which makes it easy to move, but a little less stable for big dogs that are hesitant to use the steps
3725481
Didn't realize it could actually be easy to walk my 75 lb 18 month old dog! Yay!
2956689
My dog is real old and has a liver disease so hard to tell but seems to be better use of rare legs and getting around.