Canine distemper is a contagious disease caused by a virus. CDV can be transmitted to ferrets directly from infected animals of other species, or through contact with infected material such as shoes or clothing. In other words, you can bring CDV home if you are in contact with infected material in places such as the woods, a pet store, or a breeding facility. Using a canine distemper vaccine that is not approved for use in ferrets can also transmit CDV.
There are many possibilities for hind limb weakness in a rabbit and often the diagnosis cannot be reached without some investigative work. Some of the conditions discussed are treatable and others are not. You can help tremendously by being observant and even taking notes so you remember the details of your pet's illness or unusual behavior. This information is invaluable in determining a diagnosis, a treatment regimen and ultimately the prognosis for your pet.