A 9-year old female neutered boxer presented with a history of lameness. Bloodwork showed normocytic normochromic anemia, thrombocytopenia, leukopenia, neutropenia, and rouleaux formation. Biochemistry revealed hyperproteinemia, hypoalbuminemia, and hypercalcemia. Urinalysis showed isosthenuria. Serum protein electrophoresis was normal. Differentials included multiple myeloma due to hyperproteinemia, hypercalcemia as a paraneoplastic syndrome, cytopenias from myelophthisis, and monoclonal gammopathy. Lymphoma was also considered.