Petaurus gracilis (De Vis, 1883) is a gliding possum commonly known as the mahogany glider. This species is endemic to open sclerophyll woodland between Tully and Ingham in North Queensland, Australia. Within its distribution P. gracilis occurs in forests dominated by trees of the genera Eucalyptus, Corymbia, Melaleuca, and Acacia. This species is recognized as an endangered species because of habitat loss, high degree of fragmentation of the remaining habitat, its naturally limited distribution, lack of habitat protected within national parks, and the degradation of its habitat from the transition to rain forest and thickening of sclerophyllous vegetation in much of its habitat.