I've been reading up on DM some and have been noticing some troubling signs in my dog Shasta. She has had what I think is mild HD/arthritis for 3-4 years now but I'm starting to think she may have DM also. She has been weak in the back end for awhile, sometimes you can hear her back nails dragging but she still seems to have good feeling in her back end/feet. About a year ago she was having issues where if she strained to go to the bathroom for awhile she would stay in a squatting position most of the day then it would go away the next day. I started giving her canned pumpkin about 7 months ago and the straining/squatting went away. Now, for the first time since then she was squatting again after a short walk tonight but it seems to be getting better already. If it's DM doesn't it just get worse? Could it just be that she's weak or may have strained herself? For those of you with dogs that suffer from DM what were some of the first things you noticed when your dog started having issues? Thanks for any help/advice!