A) No. Only one set of leg extensions can be added to each Neater Feeder Deluxe. We suggest asking your veterinarian what feeding height they recommend for your pet. The small leg extensions fit the Cat and Small Deluxe Neater Feeders, and the large leg extensions fit the Large Neater Feeder Deluxe. (Please note the leg extensions only fit the Deluxe Neater Feeder)