We have the doggy steps too. Our neighbor brought over one with three steps. Then we purchased another four steps. They sent us an extra 3 step and we kept those too. We plan on giving it to someone who needs them
Lola uses her 3 step to get on and off the couch. She uses the 4 step for our bed. They work great and she learned how to use them really fast. I definetely recommend these.