I cant figure it out, she is always smiling (yes she smiles) and happy but a week ago on a walk she just stopped walking and her legs SHOOK real bad. Had to drive her back home. Now she wont walk,smile, eat,drink or anything. All she does is lay there and vomit once in awhile. Its like someone switched dogs on me. We thought id was joint treat/meds a friend gave us cause we thought her bad leg was the cause, but we stopped givin em to her and shes still like a lump.Anyones help would be much appr. Thank you for your time.