My sweetie Katie has trouble with her back legs (now). She hasn'talways been this way. She is an American Tabby longhair and is maybe 6. It started with her L.F. paw and now she uses almost her entire rear legs to walk on. Some days are better than others. We have her on Glypizide and for a while she got better now she is the same as before. The doc says her blood sugar level was not outrageous (for a cat who was at the vets office). It was 300 and he says most cats thar are diabetic are somewhere in the 600-700 range. She hurts and I don't know what to do (which is unusual). ANY ideas?