We have five bunnies and our little ND has started about a week ago with a back leg, back, or neurological issue that makes it difficult for him to walk, run, or stand. It seems to be getting worse. There is no head lean and now he sits on is side most of the time. He has been in a large outdoor ground cage with another bunny for several years and there has been no evidence of injury that we can tell. The other 3 bunnies do not have access to these two. When he sits or lies down, he occasionally starts a front to back rocking motion with a period of about once every second. We think he still eats and drinks fine. Diet has not changed and consists of hay, grass from the yard, veggie scraps, and pellets. All other bunnies are just fine. We have an appointment scheduled in a week with our busy vet but in the mean time, we are looking for ideas. Thanks for the help.