have an eleven year old cocker spaniel who last tuesday was just fine, then on Wednesday he wouldn't get up and just acted funny. Took him to the vet that day and they did a blood work up ( which was fine) and gave him a shot of antibiotic and an antiinflammatory. Said his heart sounded good, but he might have a virus or hurt himself someway. Well five days have passed, and this whole weekend he was pretty much imobile. He would not eat, not even his favorite things and when he did finally drink some water he would drink in large quantiy. When he walks its almost like a drunk type of walk, breathing seems labored and he can't wait to lay down. In 6 days he is a complety different dog. Talked to vet today and he thinks it may be muscular related and gave a rimadyl pill an hour ago and vet said of its this I will know within 24-48 hours. He has been on steriods for at least six years due to chronic ear infections, just not sure what to do or think at this point, he is my little baby and I don't want him to suffer. Any ideas??