[Case presentation in small animal medicine. What is your diagnosis?].

Atrial fibrillation and dilated cardiomyopathy were diagnosed in a 9-year old boxer who was examined because of anorexia and ascites. Longterm treatment included a diuretic (furosemide), an ACE-inhibitor (benazepril), digoxin, and a betablocker (atenolol). The prognosis for DCMP is unfavorable--the described dog died 11 months after diagnosis.