<i>Hafnia alvei</i>: The unreported pathogen responsible for a sub‐capsular renal abscess in a 1‐year‐old, presumed immunocompetent crossbreed dog with no co‐morbidities

Abstract A 12‐month‐old, male neutered Rottweiler cross, weighing 34.0 kg with a 6‐month history of episodes pyrexia, hyporexia, pollakiuria and left flank pain is described. Ultrasonographic computed tomography findings combined clinical signs were consistent renal abscess which was treated 2 days later ureteronephrectomy. Septic peritonitis assumed intraoperatively upon the discovery moderate amount turbid, straw‐coloured free abdominal fluid appearance organs peritoneum. Histopathology kidney confirmed focally extensive subcapsular concurrent suppurative lymphoplasmacellular nephritis. Culture intra‐capsular tissue resulted in heavy growths Hafnia alvei . The dog spent 8 hospital made full recovery; resolution presenting has been achieved to date. good prognosis given cautiously owing undetermined aetiology disease.