Reference hematological and plasma biochemical values are presented for the greater glider (Petauroides volans) at Tumut (southeastern New South Wales, Australia). Nineteen animals were sampled during a capture period of 1 wk in August 1999. Values for red cell counts were significantly higher in male animals (x̄ ± SE; males: 5.6 ± 0.1; females: 5.2 ± 0.1). Young animals had higher white cell counts than older ones (x̄ ± SE; young: 4.9 ± 0.4; older: 2.8 ± 0.4). Lymphocytes were the predominant white blood cell type in this species.