Recent studies in the human literature suggest that serum bile acid concentrations could be an early predictor of short-term survival in critically ill patients. However, there is no available information in the veterinary literature regarding serum bile acid concentrations in dogs with sepsis. We aimed to evaluate if resting serum bile acid concentrations differ between septic and non-septic dogs. This was a retrospective observational study, of medical records at a single referral center over a twelve-year period. Twenty-six client-owned dogs diagnosed with sepsis were identified. Twenty-one dogs presenting with a non-hepatobiliary systemic disease and twenty-nine dogs admitted for an elective orthopedic procedure, considered otherwise healthy, were selected as control groups. Resting serum bile acid concentrations were significantly higher in the septic compared to the non-septic groups (ill control and orthopedic control groups). However, when assessing bile acid concentrations between groups individually, no difference was identified between the septic and the orthopedic control group. These results should be interpreted cautiously.

A 2‐year‐old male neutered Maine Coon cat (Cat 1) presented to a referral centre with a 1‐day history of lethargy. A 3‐year‐old male neutered domestic shorthair cat (Cat 2) presented with a 1‐week history of inappetence and lethargy. Complete blood count revealed a severe, mildly regenerative, normocytic, normochromic anaemia for Cat 1, and a severe, non‐regenerative normocytic normochromic anaemia for Cat 2. Following further investigations, a diagnosis of non‐associative immune‐mediated haemolytic anaemia was made. Treatment with immunosuppressive dosages of glucocorticoids was started; however, given the lack of response and severity of disease in both cases, it was decided to administer human intravenous immunoglobulin. There was improvement of haematocrit 2 days following the infusion for Cat 1, and 5 days after for Cat 2. Both cats were discharged from the hospital. Cat 1 remained in remission 6 months following the diagnosis, and Cat 2 was lost to follow‐up.