A 14-year-old male castrated domestic short hair cat was presented to an emergency service for skin wound and respiratory distress. The cat had been treated for diabetes mellitus for several months with three units of glargine insulin (Lantus, Sanofi; Paris, France) twice daily. One week before the emergency presentation, a primary care veterinarian noted decreased skin turgor, and treated the cat for a urinary tract infection with injectable cefovecin (dose unknown; Zoetis; Parsippany, NJ, USA). Daily subcutaneous fluid administration (Ringer's lactate solution, Dechra; Overland Park, KS, USA) was performed at home by the owner. Upon presentation the cat was tachypneic (60 breaths per minute) and dyspneic. A 2 x 3 cm wound was located on the dorsal thorax with minimal bleeding and thin pliable edges (Figure 1). Similar wounds were noted