A smaller bat of genus Ozimops, O. cobourgianus are around fifty millimetres (two inches) long and weigh six to ten grams.

The population has been described as subspecies Tadarida loriae cobourgiana by David H. Johnson in 1959, the result of examination of mammal specimens the author collected on a 1948 scientific expedition backed by American and Australia institutions.

[4] The holotype was collected at Black Rock Point, southeast of the Cape Don lighthouse in the Cobourg Peninsula, at the northern coast of the Australian continent.

The animal's pelage is lighter at the front, a yellowish shade of cream, and extends out from the body at the wing line from the humerus to the upper leg.

[3][6] The genital morphology of Ozimops species allows them to be distinguished, the glans penis of O. cobourgianus bears large spiny epithelial protuberances over much of the surface.

They have not been recorded at the coast, midway between these two areas, at the higher rainfall zones of the Kimberley region and the west of the Top End.

[1] Ozimops cobourgianus are observed gathering above the tree canopy after sunset in numbers of around one hundred, and dispersing themselves to forage in surrounding areas.

The individuals reach sexual maturity at around ten months, also assumed from similar species, and the midpoint of these ages is inferred for the generation length of O. cobourgianus as four to five years.