From a visit to Doc Caldwell, The Rabbit Journals veterinarian.
Kate was in for your annual shots, while Dixie was being checked for that nagging cough. She had it last year, then it cleared up in the fall, only to return in late March.

There were no heartworms, but the x-ray shows that she has a very enlarged heart. The problem is probably congenital aggravated by allergies. Doc Caldwell put her on 12.5 mg of Lasix, twice a day for two weeks. If there isn’t an improvement, then a stronger medicine will be called for.

Last year I had to put Maizie, my favorite down. Dixie became my favorite hunting dog while Lucy stayed my favorite pet.
Lucy is now demanding that I demote her back to pack status since I seem to be the kiss of death on “favorites”