My dog developed a cough and was coughing up a clear mucus. She lost her energy and had a hard time eating dry food and wasn't drinking as much water as she normally does. I fed her canned food which she ate very quickly...I gave her pedialyte (about a half ounce to an ounce) every two hours for about 8 hours. I left for work and got home about 12 hours later. When I got home, she was running around and playing. She coughed a couple times, but it wasn't that honking, dry cough and she didn't cough up any mucus. My family has used pedialyte when our dogs get sick to prevent them from dehydrating, but it seems to work for parvo as well. I was told u can inject it just under the skin as well, but I fed mine to my dog using a turkey baster. Worked well.