What is your diagnosis? Porcelain gallbladder.

An 11-year-old neutered male Border Terrier was evaluated because of vomiting, polyuria, polydipsia, decreased appetite, and weight loss of 2 weeks’ duration. On admission, the dog was lethargic, dehydrated, and slightly dyspneic. Respiratory rate was high (100 breaths/min) with an abdominal component, and thoracic auscultation revealed mild wheezing bilaterally. Abdominal palpation caused signs of discomfort, and an enlarged liver was suspected. Thoracic radiographs were obtained (Figure 1).