I've been invited to give feedback to all Parsons students, regarding your thesis projects.
I'm not a pet owner so I'm not as in tune with the prosthetic need for domesticated animals as you seem to be. How important is this is the grand scheme of things? Are there non-productized solution possibilities, like rehab or physical therapy that could be part of your design concept?
It's great that you've considered cost here and have proposed a rent-to-use strategy, especially since these items are temporary in nature. This alone can have big impact and help reduce waste while simultaneously keeping cost down and giving pets a newfound sense of personal liberty.
It's a very niche problem/solution, so be sure to include the research story and statistics to back it up. This will eliminate the guesswork in the minds of consumers and help communicate why it's important.
Thank you! J.