A correction about my meds: the diuretics are to remove the fluid from the inside of my lungs, not from around my lungs. Too bad; if the fluid was just around my lungs they could remove it with a small needle, but because it's inside my lungs they have to use drugs which are more inefficient, take longer to work, and hurt my kidneys. The cardiologist said that each dog is different and gets fluid buildup in different areas. She said one dog got fluid in its abdomen and everyone just thought it was getting fat!